Yuri Suzuki
Professor of Applied Physics and, by courtesy, of Materials Science and Engineering
Web page: http://web.stanford.edu/people/ysuzuki1
Bio
My experimental group focuses on novel ground states and functional properties in condensed matter systems synthesized via atomically precise thin film deposition techniques with a recent emphasis on highly correlated electronic systems:. Many of these phenomena are then incorporated into prototypical device structures. Our recent focus is on: emergent interfacial phenomena electronic and magnetic phenomena, spin current generation, propagation, and control in complex oxide based ferromagnets strongly correlated materials, multifunctional behavior in complex oxide thin films and heterostructures, low dimensional electron gas systems.
Academic Appointments
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Professor, Applied Physics
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Professor (By courtesy), Materials Science and Engineering
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Member, Bio-X
Administrative Appointments
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Director, Stanford Nano Shared Facilities (2021 - Present)
Honors & Awards
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Fellow, Materials Research Society (2023)
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Fellow, American Association for the Advancement of Science (2023)
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Vannevar Bush Faculty Fellowship, Department of Defense (2014-2019)
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Fellow, American Physical Society (2011)
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American Competitiveness and Innovation Fellow, National Science Foundation (2008)
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Maria Goeppert-Mayer Award, American Physical Society (2005)
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Presidential Chair Fellow, UC Berkeley (2003-2004)
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Outstanding Educator for having most influenced Merrill Presidential Scholar, Jonathan Eser, Cornell University (2002)
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Robert Lansing Hardy Award, The Materials, Minerals and Metals Society (1999)
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Fellowship for Science and Engineering, David and Lucile Packard Foundation (1998-2003)
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Faculty Early Career Development Award, National Science Foundation (1997-2001)
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Young Investigator Award, Office of Naval Research (1997-2000)
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Fellowship, ARCS Foundation (1994)
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Predoctoral Fellowship, National Science Foundation (1989-1992)
Boards, Advisory Committees, Professional Organizations
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Member, American Association for the Advancement of Science
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Member, Materials Research Society
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Member, American Physical Society
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Member, Program Committee, 64th Annual Conference on Magnetism and Magnetic Materials (2020 - 2020)
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Member, Program Committee, 63rd Annual Conference on Magnetism and Magnetic Materials (2019 - 2019)
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Member, Program Committee, Physics and Chemistry of Semiconductor Interfaces (2018 - 2018)
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Member, Program Committee, 23rd International Colloquium on Magnetic Films and Surfaces (2018 - 2018)
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Member, Program Committee, 62nd Annual Conference on Magnetism and Magnetic Materials (2017 - 2017)
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Member, Program Committee, 61st Annual Conference on Magnetism and Magnetic Materials (2016 - 2016)
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Member, Program Committee, Joint Intermag ad Conference on Magnetism and Magnetic Materials (2015 - 2016)
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Member, Program Committee, 60th Magnetism and Magnetic Materials (2015 - 2015)
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Member, Program Committee, 59th Annual Conference on Magnetism and Magnetic Materials (2014 - 2014)
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Member, Executive Committee, Topical Group in Magnetism, American Physical Society (2013 - 2016)
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Member, Material Research Society Bulletin, 2014 Volume organizer (2013 - 2014)
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Member, Program Committee, 12th Joint Intermag and Conference on Magnetism and Magnetic Materials (2013 - 2013)
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Member, Program Committee, 58th Annual Conference on Magnetism and Magnetic Materials (2013 - 2013)
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Member, Advanced Light Source User's Executive Committee (2012 - 2014)
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Member, Nominating Committee of Division of Materials Physics, American Physical Society (2012 - 2013)
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Member, Program Committee, Intermag 2012 (2012 - 2012)
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Member, Program Committee, 56th Annual Conference on Magnetism and Magnetic Materials (2011 - 2011)
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Member, Program committee, Magnetic Metallic Multilayers 2010 Conference (2010 - 2010)
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Member, Summer High School Apprenticeship Research Program (SHARP) Executive Committee of the UC Berkeley Nanosciences & Nanoengineering Institute (2007 - 2008)
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Member, 2006 Maria Goeppert-Mayer Award Selection Committee (American Physical Society) (2006 - 2006)
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Member, Program Committee, Intermag 2006 (2006 - 2006)
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Member, Organizing Committee for the 49th Magnetism and Magnetic Materials Conference (2004 - 2004)
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Member, Organizing Committee, Focused Session of the 2004 American Physical Society (2004 - 2004)
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Organizer, Workshop on "Spin Polarized Materials" for DOE Center of Excellence in Synthesis and Processing. (2004 - 2004)
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Member, Development of High School Internship program with local high school, UC Berkeley (2003 - 2012)
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Member, Board of Directors of the Materials Research Society (2003 - 2005)
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Member, Program Committee, 47th Annual Magnetism and Magnetic Materials Conference. (2002 - 2002)
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Chair, Fall 2001 Materials Research Society (MRS) Meeting (2001 - 2001)
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Member, Program Committee, 46th Annual Magnetic Materials Conference. (2001 - 2001)
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Organizer, MRS Fall 1998 Symposium , "Magnetic Oxides and Oxides Devices" (1998 - 1998)
Professional Education
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A.B. magna cum laude, Harvard University, Dept. of Physics (1989)
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Ph.D., Stanford University, Dept. of Applied Physics (1995)
Patents
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E.M. Gyorgy J. M. Phillips Y. Suzuki R.B. van Dover. "United States Patent 5,728,421 Article Comprising Spinel-Structure Material on a Substrate, and Method of Making Article"
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E.M. Gyorgy J. M. Phillips Y. Suzuki R.B. van Dover. "United States Patent 5665465 Article Comprising Exchange-Coupled Magnetic Layers"
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C.K. Ober S.L. Sass Y. Suzuki. "United States Patent 6,329,070 Fabrication of Two Dimensionally Periodic surface Structures with Spacings Between 50 and 1.5 Nanometers"
Current Research and Scholarly Interests
Her interests are focused on novel ground states and functional properties in condensed matter systems synthesized via atomically precise thin film deposition techniques with a recent emphasis has been on highly correlated electronic systems:
• Emergent interfacial electronic & magnetic phenomena through complex oxide heteroepitaxy
• Low dimensional electron gas systems
• Spin current generation, propagation and control in complex oxide-based ferromagnets
• Multifunctional behavior in complex oxide thin films and heterostructures
2024-25 Courses
- Quantum Materials
APPPHYS 204 (Win) -
Independent Studies (7)
- Curricular Practical Training
APPPHYS 291 (Aut, Win, Spr) - Curricular Practical Training
PHYSICS 291 (Aut, Win, Spr) - Directed Studies in Applied Physics
APPPHYS 290 (Aut, Win, Spr) - Independent Research and Study
PHYSICS 190 (Aut, Win, Spr) - Ph.D. Research
MATSCI 300 (Aut, Win, Spr) - Research
PHYSICS 490 (Aut, Win, Spr) - Senior Thesis Research
PHYSICS 205 (Aut, Win, Spr)
- Curricular Practical Training
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Prior Year Courses
2023-24 Courses
- Condensed Matter Seminar
APPPHYS 470 (Aut, Win, Spr) - Functional Materials and Devices
APPPHYS 77N (Aut) - Quantum Materials
APPPHYS 204 (Win)
2022-23 Courses
- Functional Materials and Devices
APPPHYS 77N (Aut) - Quantum Materials
APPPHYS 204 (Win)
2021-22 Courses
- Functional Materials and Devices
APPPHYS 77N (Aut) - Quantum Materials
APPPHYS 204 (Win)
- Condensed Matter Seminar
Stanford Advisees
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Doctoral Dissertation Reader (AC)
Kevin Crust, Yingfei Li -
Doctoral Dissertation Advisor (AC)
Sauviz Alaei, Daisy O'Mahoney, Lerato Takana -
Master's Program Advisor
Daniel Sun -
Doctoral (Program)
Angelo Marquez-Nieto, Brendan Marsh, Daniel Wong
All Publications
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Probing the Thermal and Electrical Properties of Ultrawide Bandgap Nitrogen-Polar AlGaN Heterostructures
ADVANCED FUNCTIONAL MATERIALS
2024
View details for DOI 10.1002/adfm.202403474
View details for Web of Science ID 001232449100001
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The role of magnetic anisotropy in the magnetoresistance of Cr<sub>2</sub>O<sub>3</sub>/Al<sub>2</sub>O<sub>3</sub> thin film antiferromagnets
AIP ADVANCES
2024; 14 (3)
View details for DOI 10.1063/5.0195641
View details for Web of Science ID 001181003200006
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Emergent Ferromagnetism in CaRuO3/CaMnO3(111)-Oriented Superlattices.
Nano letters
2024
Abstract
The boundary between CaRuO3 and CaMnO3 is an ideal test bed for emergent magnetic ground states stabilized through interfacial electron interactions. In this system, nominally antiferromagnetic and paramagnetic materials combine to yield interfacial ferromagnetism in CaMnO3 due to electron leakage across the interface. In this work, we show that the crystal symmetry at the surface is a critical factor determining the nature of the interfacial interactions. Specifically, by growing CaRuO3/CaMnO3 heterostructures along the (111) instead of the (001) crystallographic axis, we achieve a 3-fold enhancement of the magnetization and involve the CaRuO3 layers in the ferromagnetism, which now spans both constituent materials. The stabilization of a net magnetic moment in CaRuO3 through strain effects has been long-sought but never consistently achieved, and our observations demonstrate the importance of interface engineering in the development of new functional heterostructures.
View details for DOI 10.1021/acs.nanolett.3c04623
View details for PubMedID 38367281
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Enhanced Ferromagnetism in Atomically Thin Oxides Achieved by Interfacial Reconstruction
ADVANCED FUNCTIONAL MATERIALS
2024
View details for DOI 10.1002/adfm.202313294
View details for Web of Science ID 001157851200001
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Author Correction: Ultra-thin lithium aluminate spinel ferrite films with perpendicular magnetic anisotropy and low damping.
Nature communications
2024; 15 (1): 534
View details for DOI 10.1038/s41467-023-43051-2
View details for PubMedID 38225237
View details for PubMedCentralID PMC10789866
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Aluminum substitution in low damping epitaxial lithium ferrite films
APPLIED PHYSICS LETTERS
2023; 123 (17)
View details for DOI 10.1063/5.0163362
View details for Web of Science ID 001095984400005
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Synthesis of multifunctional amorphous metallic shell on crystalline metallic nanoparticles.
RSC advances
2023; 13 (43): 30491-30498
Abstract
Colloidal nanoparticles can be coated with a conformal shell to form multifunctional nanoparticles. For instance, plasmonic, magnetic, and catalytic properties, chemical stability and biocompatibility can be mixed and matched. Here, a facile synthesis for depositing metal boride amorphous coatings on colloidal metallic nanocrystals is introduced. The synthesis is independent of core size, shape, and composition. We have found that the shell synthesis is limited to nanoparticles capped with short molecular weight and low binding energy ligands, and does not work with polyvinylpyrrolidone (PVP)-coated Ag nanoparticles or thiol-coated Au nanoparticles. Shell thickness can be as thin as 3 nm with no apparent pinholes. High pressure studies show that the coatings are highly resistant to crystallization and are strongly bonded to the crystalline core. By choosing either CoB or NiB for the coating, the composite nanoparticles can be either ferromagnetic or paramagnetic at room temperature, respectively.
View details for DOI 10.1039/d3ra06093d
View details for PubMedID 37860175
View details for PubMedCentralID PMC10582685
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Ultra-thin lithium aluminate spinel ferrite films with perpendicular magnetic anisotropy and low damping.
Nature communications
2023; 14 (1): 4918
Abstract
Ultra-thin films of low damping ferromagnetic insulators with perpendicular magnetic anisotropy have been identified as critical to advancing spin-based electronics by significantly reducing the threshold for current-induced magnetization switching while enabling new types of hybrid structures or devices. Here, we have developed a new class of ultra-thin spinel structure Li0.5Al1.0Fe1.5O4 (LAFO) films on MgGa2O4 (MGO) substrates with: 1) perpendicular magnetic anisotropy; 2) low magnetic damping and 3) the absence of degraded or magnetic dead layers. These films have been integrated with epitaxial Pt spin source layers to demonstrate record low magnetization switching currents and high spin-orbit torque efficiencies. These LAFO films on MGO thus combine all of the desirable properties of ferromagnetic insulators with perpendicular magnetic anisotropy, opening new possibilities for spin based electronics.
View details for DOI 10.1038/s41467-023-40733-9
View details for PubMedID 37582804
View details for PubMedCentralID PMC10427713
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A puzzling insensitivity of magnon spin diffusion to the presence of 180-degree domain walls.
Nature communications
2023; 14 (1): 2393
Abstract
We present room-temperature measurements of magnon spin diffusion in epitaxial ferrimagnetic insulator MgAl0.5Fe1.5O4 (MAFO) thin films near zero applied magnetic field where the sample forms a multi-domain state. Due to a weak uniaxial magnetic anisotropy, the domains are separated primarily by 180° domain walls. We find, surprisingly, that the presence of the domain walls has very little effect on the spin diffusion - nonlocal spin transport signals in the multi-domain state retain at least 95% of the maximum signal strength measured for the spatially-uniform magnetic state, over distances at least five times the typical domain size. This result is in conflict with simple models of interactions between magnons and static domain walls, which predict that the spin polarization carried by the magnons reverses upon passage through a 180° domain wall.
View details for DOI 10.1038/s41467-023-38095-3
View details for PubMedID 37100786
View details for PubMedCentralID PMC10133301
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Hybrid spin Hall nano-oscillators based on ferromagnetic metal/ferrimagnetic insulator heterostructures.
Nature communications
2023; 14 (1): 1406
Abstract
Spin-Hall nano-oscillators (SHNOs) are promising spintronic devices to realize current controlled GHz frequency signals in nanoscale devices for neuromorphic computing and creating Ising systems. However, traditional SHNOs devices based on transition metals have high auto-oscillation threshold currents as well as low quality factors and output powers. Here we demonstrate a new type of hybrid SHNO based on a permalloy (Py) ferromagnetic-metal nanowire and low-damping ferrimagnetic insulator, in the form of epitaxial lithium aluminum ferrite (LAFO) thin films. The superior characteristics of such SHNOs are associated with the excitation of larger spin-precession angles and volumes. We further find that the presence of the ferrimagnetic insulator enhances the auto-oscillation amplitude of spin-wave edge modes, consistent with our micromagnetic modeling. This hybrid SHNO expands spintronic applications, including providing new means of coupling multiple SHNOs for neuromorphic computing and advancing magnonics.
View details for DOI 10.1038/s41467-023-37028-4
View details for PubMedID 36918562
View details for PubMedCentralID 5575904
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Large Spin-Orbit-Torque Efficiency and Room-Temperature Magnetization Switching in SrIrO3/Co-Fe-B Heterostructures
PHYSICAL REVIEW APPLIED
2023; 23 (2)
View details for DOI 10.1103/PhysRevApplied.19.024076
View details for Web of Science ID 000943193100001
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Understanding Signatures of Emergent Magnetism in Topological Insulator/Ferrite Bilayers.
Physical review letters
2022; 128 (12): 126802
Abstract
Magnetic insulator-topological insulator heterostructures have been studied in search of chiral edge states via proximity induced magnetism in the topological insulator, but these states have been elusive. We identified MgAl_{0.5}Fe_{1.5}O_{4}/Bi_{2}Se_{3} bilayers for a possible magnetic proximity effect. Electrical transport and polarized neutron reflectometry suggest a proximity effect, but structural data indicate a disordered interface as the origin of the magnetic response. Our results provide a strategy via correlation of microstructure with magnetic data to confirm a magnetic proximity effect.
View details for DOI 10.1103/PhysRevLett.128.126802
View details for PubMedID 35394317
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Anisotropic Magnon Spin Transport in Ultrathin Spinel Ferrite Thin Films─Evidence for Anisotropy in Exchange Stiffness.
Nano letters
1800
Abstract
Magnon-mediated spin flow in magnetically ordered insulators enables long-distance spin-based information transport with low dissipation. In the materials studied to date, no anisotropy has been observed in the magnon propagation length as a function of propagation direction. Here, we report measurements of magnon spin transport in a spinel ferrite, magnesium aluminum ferrite MgAl0.5Fe1.5O4 (MAFO), which has a substantial in-plane 4-fold magnetic anisotropy. We observe spin diffusion lengths > 0.8 mum at room temperature in 6 nm films, with spin diffusion lengths 30% longer along the easy axes compared to the hard axes. The sign of this difference is opposite to the effects just of anisotropy in the magnetic energy for a uniform magnetic state. We suggest instead that accounting for anisotropy in exchange stiffness is necessary to explain these results. These findings provide an approach for controlling magnon transport via strain, which opens new opportunities for designing magnonic devices.
View details for DOI 10.1021/acs.nanolett.1c04332
View details for PubMedID 35077185
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Ferromagnetic resonances in single-crystal yttrium iron garnet nanofilms fabricated by metal-organic decomposition
APPLIED PHYSICS LETTERS
2021; 119 (17)
View details for DOI 10.1063/5.0067122
View details for Web of Science ID 000754578600001
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Emergent long-range magnetic order in ultrathin (111)-oriented LaNiO3 films
NPJ QUANTUM MATERIALS
2021; 6 (1)
View details for DOI 10.1038/s41535-021-00345-2
View details for Web of Science ID 000656948700001
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Large and robust charge-to-spin conversion in sputtered conductive WTex with disorder
MATTER
2021; 4 (5): 1639-1653
View details for DOI 10.1016/j.matt.2021.02.016
View details for Web of Science ID 000647646400003
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Magnetic anisotropy and spin scattering in (La2/3Sr1/3)MnO3/CaRuO3 bilayers
AMER INST PHYSICS. 2021
View details for DOI 10.1063/9.0000188
View details for Web of Science ID 000630453100005
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Enhanced Interface-Driven Perpendicular Magnetic Anisotropy by Symmetry Control in Oxide Superlattices
PHYSICAL REVIEW APPLIED
2021; 15 (2)
View details for DOI 10.1103/PhysRevApplied.15.024001
View details for Web of Science ID 000613524600001
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Growth and characterization of La0.67Sr0.33MnO3/YBa2Cu3O7-delta bilayers
AIP ADVANCES
2021; 11 (1)
View details for DOI 10.1063/9.0000105
View details for Web of Science ID 000607144700003
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Ultra-low magnetic damping in epitaxial Li0.5Fe2.5O4 thin films
APPLIED PHYSICS LETTERS
2020; 117 (9)
View details for DOI 10.1063/5.0023077
View details for Web of Science ID 000570143100001
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The role of iron in magnetic damping of Mg(Al,Fe)(2)O-4 spinel ferrite thin films
APPLIED PHYSICS LETTERS
2020; 116 (14)
View details for DOI 10.1063/5.0003628
View details for Web of Science ID 000526869500001
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Emergent electric field control of phase transformation in oxide superlattices.
Nature communications
2020; 11 (1): 902
Abstract
Electric fields can transform materials with respect to their structure and properties, enabling various applications ranging from batteries to spintronics. Recently electrolytic gating, which can generate large electric fields and voltage-driven ion transfer, has been identified as a powerful means to achieve electric-field-controlled phase transformations. The class of transition metal oxides provide many potential candidates that present a strong response under electrolytic gating. However, very few show a reversible structural transformation at room-temperature. Here, we report the realization of a digitally synthesized transition metal oxide that shows a reversible, electric-field-controlled transformation between distinct crystalline phases at room-temperature. In superlattices comprised of alternating one-unit-cell of SrIrO3 and La0.2Sr0.8MnO3, we find a reversible phase transformation with a 7% lattice change and dramatic modulation in chemical, electronic, magnetic and optical properties, mediated by the reversible transfer of oxygen and hydrogen ions. Strikingly, this phase transformation is absent in the constituent oxides, solid solutions and larger period superlattices. Our findings open up this class of materials for voltage-controlled functionality.
View details for DOI 10.1038/s41467-020-14631-3
View details for PubMedID 32060300
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Magnetism and transport in transparent high-mobility BaSnO3 films doped with La, Pr, Nd, and Gd
PHYSICAL REVIEW MATERIALS
2019; 3 (12)
View details for DOI 10.1103/PhysRevMaterials.3.124402
View details for Web of Science ID 000501530000003
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Damping Enhancement in Coherent Ferrite-Insulating-Paramagnet Bilayers
PHYSICAL REVIEW APPLIED
2019; 12 (5)
View details for DOI 10.1103/PhysRevApplied.12.054044
View details for Web of Science ID 000498064200002
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Ultrathin interfacial layer with suppressed room temperature magnetization in magnesium aluminum ferrite thin films
APPLIED PHYSICS LETTERS
2019; 115 (13)
View details for DOI 10.1063/1.5111326
View details for Web of Science ID 000487997400005
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Efficient spin current generation in low-damping Mg(Al, Fe)(2)O-4 thin films
APPLIED PHYSICS LETTERS
2019; 115 (12)
View details for DOI 10.1063/1.5119726
View details for Web of Science ID 000487038900007
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Metallicity in SrTiO3 substrates induced by pulsed laser deposition
APL MATERIALS
2019; 7 (1)
View details for DOI 10.1063/1.5080939
View details for Web of Science ID 000457407500003
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Ultralow Damping in Nanometer-Thick Epitaxial Spinel Ferrite Thin Films
NANO LETTERS
2018; 18 (7): 4273–78
Abstract
Pure spin currents, unaccompanied by dissipative charge flow, are essential for realizing energy-efficient nanomagnetic information and communications devices. Thin-film magnetic insulators have been identified as promising materials for spin-current technology because they are thought to exhibit lower damping compared with their metallic counterparts. However, insulating behavior is not a sufficient requirement for low damping, as evidenced by the very limited options for low-damping insulators. Here, we demonstrate a new class of nanometer-thick ultralow-damping insulating thin films based on design criteria that minimize orbital angular momentum and structural disorder. Specifically, we show ultralow damping in <20 nm thick spinel-structure magnesium aluminum ferrite (MAFO), in which magnetization arises from Fe3+ ions with zero orbital angular momentum. These epitaxial MAFO thin films exhibit a Gilbert damping parameter of ∼0.0015 and negligible inhomogeneous linewidth broadening, resulting in narrow half width at half-maximum linewidths of ∼0.6 mT around 10 GHz. Our findings offer an attractive thin-film platform for enabling integrated insulating spintronics.
View details for DOI 10.1021/acs.nanolett.8b01261
View details for Web of Science ID 000439008300031
View details for PubMedID 29792812
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Coexistence of Low Damping and Strong Magnetoelastic Coupling in Epitaxial Spinel Ferrite Thin Films
ADVANCED MATERIALS
2017; 29 (34)
Abstract
Low-loss magnetization dynamics and strong magnetoelastic coupling are generally mutually exclusive properties due to opposing dependencies on spin-orbit interactions. So far, the lack of low-damping, magnetostrictive ferrite films has hindered the development of power-efficient magnetoelectric and acoustic spintronic devices. Here, magnetically soft epitaxial spinel NiZnAl-ferrite thin films with an unusually low Gilbert damping parameter (<3 × 10-3 ), as well as strong magnetoelastic coupling evidenced by a giant strain-induced anisotropy field (≈1 T) and a sizable magnetostriction coefficient (≈10 ppm), are reported. This exceptional combination of low intrinsic damping and substantial magnetostriction arises from the cation chemistry of NiZnAl-ferrite. At the same time, the coherently strained film structure suppresses extrinsic damping, enables soft magnetic behavior, and generates large easy-plane magnetoelastic anisotropy. These findings provide a foundation for a new class of low-loss, magnetoelastic thin film materials that are promising for spin-mechanical devices.
View details for PubMedID 28691378
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Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La_{1-x}Sr_{x}MnO_{3})/(SrIrO_{3}) Superlattices.
Physical review letters
2017; 119 (7): 077201
Abstract
Perpendicular magnetic anisotropy (PMA) plays a critical role in the development of spintronics, thereby demanding new strategies to control PMA. Here we demonstrate a conceptually new type of interface induced PMA that is controlled by oxygen octahedral rotation. In superlattices comprised of La_{1-x}Sr_{x}MnO_{3} and SrIrO_{3}, we find that all superlattices (0≤x≤1) exhibit ferromagnetism despite the fact that La_{1-x}Sr_{x}MnO_{3} is antiferromagnetic for x>0.5. PMA as high as 4×10^{6} erg/cm^{3} is observed by increasing x and attributed to a decrease of oxygen octahedral rotation at interfaces. We also demonstrate that oxygen octahedral deformation cannot explain the trend in PMA. These results reveal a new degree of freedom to control PMA, enabling discovery of emergent magnetic textures and topological phenomena.
View details for DOI 10.1103/PhysRevLett.119.077201
View details for PubMedID 28949659
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Spin transport and dynamics in all-oxide perovskite La2/3Sr1/3MnO3/SrRuO3 bilayers probed by ferromagnetic resonance
PHYSICAL REVIEW B
2016; 94 (22)
View details for DOI 10.1103/PhysRevB.94.224423
View details for Web of Science ID 000390249900004
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Interfacial Symmetry Control of Emergent Ferromagnetism at the Nanoscale.
Nano letters
2016; 16 (9): 5647-5651
Abstract
The emergence of complex new ground states at interfaces has been identified as one of the most promising routes to highly tunable nanoscale materials. Despite recent progress, isolating and controlling the underlying mechanisms behind these emergent properties remains among the most challenging materials physics problems to date. In particular, generating ferromagnetism localized at the interface of two nonferromagnetic materials is of fundamental and technological interest. Moreover, the ability to turn the ferromagnetism on and off would shed light on the origin of such emergent phenomena and is promising for spintronic applications. We demonstrate that ferromagnetism confined within one unit cell at the interface of CaRuO3 and CaMnO3 can be switched on and off by changing the symmetry of the oxygen octahedra connectivity at the boundary. Interfaces that are symmetry-matched across the boundary exhibit interfacial CaMnO3 ferromagnetism while the ferromagnetism at symmetry-mismatched interfaces is suppressed. We attribute the suppression of ferromagnetic order to a reduction in charge transfer at symmetry-mismatched interfaces, where frustrated bonding weakens the orbital overlap. Thus, interfacial symmetry is a new route to control emergent ferromagnetism in materials such as CaMnO3 that exhibit antiferromagnetism in bulk form.
View details for DOI 10.1021/acs.nanolett.6b02255
View details for PubMedID 27472285
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Controlling disorder-mediated exchange bias in (Mn,Zn,Fe)(3)O-4 thin films
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
2016; 405: 129-136
View details for DOI 10.1016/j.jmmm.2015.12.055
View details for Web of Science ID 000368660100019
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Reversible control of magnetism in La0.67Sr0.33MnO3 through chemically-induced oxygen migration
APPLIED PHYSICS LETTERS
2016; 108 (8)
View details for DOI 10.1063/1.4942645
View details for Web of Science ID 000373057000029
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Gd-doped BaSnO3: A transparent conducting oxide with localized magnetic moments
APPLIED PHYSICS LETTERS
2016; 108 (4)
View details for DOI 10.1063/1.4939686
View details for Web of Science ID 000375217200031
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Electronic and magnetic phenomena at the interface of LaAlO3 and Ru doped SrTiO3
APPLIED PHYSICS LETTERS
2015; 107 (24)
View details for DOI 10.1063/1.4938133
View details for Web of Science ID 000367318600016
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LaAlO3/SrTiO3 interfaces doped with rare-earth ions
PHYSICAL REVIEW B
2015; 91 (20)
View details for DOI 10.1103/PhysRevB.91.205112
View details for Web of Science ID 000354557200001
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Magnetotransport in La0.7Sr0.3MnO3/CuCr2O4/Fe3O4 magnetic junctions
APPLIED PHYSICS LETTERS
2015; 106 (1)
View details for DOI 10.1063/1.4905533
View details for Web of Science ID 000347976900032
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Magnetism in CaMnO3 thin films
JOURNAL OF APPLIED PHYSICS
2014; 115 (17)
View details for DOI 10.1063/1.4864044
View details for Web of Science ID 000335643700444
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Insulating Ferromagnetic LaCoO3-delta Films: A Phase Induced by Ordering of Oxygen Vacancies
PHYSICAL REVIEW LETTERS
2014; 112 (8)
View details for DOI 10.1103/PhysRevLett.112.087202
View details for Web of Science ID 000331958400009
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Stabilization of spin-zero Ru4+ through epitaxial strain in SrRuO3 thin films
PHYSICAL REVIEW B
2013; 88 (21)
View details for DOI 10.1103/PhysRevB.88.214410
View details for Web of Science ID 000328680800001
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Quasi-two-dimensional electron gas behavior in doped LaAlO3 thin films on SrTiO3 substrates
APPLIED PHYSICS LETTERS
2013; 102 (13)
View details for DOI 10.1063/1.4800232
View details for Web of Science ID 000317240200018
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Gigahertz-frequency operation of a LaAlO3/SrTiO3-based nanotransistor
APPLIED PHYSICS LETTERS
2013; 102 (10)
View details for DOI 10.1063/1.4795725
View details for Web of Science ID 000316501200076
- Oxygen Vacancy Ordering: a degree of freedom that can control the structural, electronic, and magnetic properties of transition-metal-oxide films Physical Review Letters 2013
- Growth of Doped LaAlO3 Thin Films for Modified Quasi-Two Dimensional Electron Gases Applied Physics Letters 2013; 102: 131601
- Magnetism in CaMnO3 Thin Films Journal of Applied Physics 2013
- Interfacial Ferromagnetism in LaNiO3/CaMnO3 Physical Review Letters 2013; 111: 087202
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Interfacial Ferromagnetism and Exchange Bias in CaRuO3/CaMnO3 Superlattices
PHYSICAL REVIEW LETTERS
2012; 109 (19)
Abstract
We have found ferromagnetism in epitaxially grown superlattices of CaRuO(3)/CaMnO(3) that arises in one unit cell at the interface. Scanning transmission electron microscopy and electron energy loss spectroscopy indicate that the difference in magnitude of the Mn valence states between the center of the CaMnO(3) layer and the interface region is consistent with double exchange interaction among the Mn ions at the interface. Polarized neutron reflectivity and the CaMnO(3) thickness dependence of the exchange bias field together indicate that the interfacial ferromagnetism is only limited to one unit cell of CaMnO(3) at each interface. The interfacial moment alternates between the 1 μ(B)/interface Mn ion for even CaMnO(3) layers and the 0.5 μ(B)/interface Mn ion for odd CaMnO(3) layers. This modulation, combined with the exchange bias, suggests the presence of a modulating interlayer coupling between neighboring ferromagnetic interfaces via the antiferromagnetic CaMnO(3) layers.
View details for DOI 10.1103/PhysRevLett.109.197202
View details for Web of Science ID 000310852000025
View details for PubMedID 23215420
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Tuning the Performance of Organic Spintronic Devices Using X-Ray Generated Traps
PHYSICAL REVIEW LETTERS
2012; 109 (7)
Abstract
X rays produced during electron-beam deposition of metallic electrodes drastically change the performance of organic spintronic devices. The x rays generate traps with an activation energy of ≈0.5 eV in a commonly used organic. These traps lead to a dramatic decrease in spin-diffusion length in organic spin valves. In organic magnetoresistive (OMAR) devices, however, the traps strongly enhance magnetoresistance. OMAR is an intrinsic magnetotransport phenomenon and does not rely on spin injection. We discuss our observations in the framework of currently existing theories.
View details for DOI 10.1103/PhysRevLett.109.076603
View details for Web of Science ID 000307709400033
View details for PubMedID 23006391
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Metal-insulator transitions in epitaxial LaVO3 and LaTiO3 films
PHYSICAL REVIEW B
2012; 86 (8)
View details for DOI 10.1103/PhysRevB.86.081401
View details for Web of Science ID 000306993300001
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Controlling spin ordering in frustrated magnets via thin film heteroepitaxy
PHYSICAL REVIEW B
2012; 85 (21)
View details for DOI 10.1103/PhysRevB.85.214424
View details for Web of Science ID 000305530300007
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Interplay between magnetism and chemical structure at spinel-spinel interfaces
JOURNAL OF APPLIED PHYSICS
2012; 111 (9)
View details for DOI 10.1063/1.4707890
View details for Web of Science ID 000304109900082
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Evidence of high-spin Ru and universal magnetic anisotropy in SrRuO3 thin films
PHYSICAL REVIEW B
2012; 85 (13)
View details for DOI 10.1103/PhysRevB.85.134429
View details for Web of Science ID 000302904900003
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Structure and magnetism of nanocrystalline and epitaxial (Mn,Zn,Fe)(3)O-4 thin films
JOURNAL OF APPLIED PHYSICS
2012; 111 (7)
View details for DOI 10.1063/1.3676619
View details for Web of Science ID 000303282400038
- Ferrimagnetism un PrCoO3 Epitaxial Films Rapid Communications Physical Review B 2012; 87: 020405
- Electronic Tuning of La2/3Sr1/3MnO3 thin films via epitaxy Journal of Applied Physics 2012; 111: 063920
- Structure and magnetism of nanocrystalline and epitaxial (Mn,Zn,Fe)3O4 thin films Journal of Applied Physics 2012; 111: 07A337
- Controlling Spin Ordering in Canted Magnets via Heteroepitaxy Physical Review B 2012; 85: 214424
- Electronic Tuning of La2/3Sr1/3MnO3 thin films via epitaxy Journal of Applied Physics 2012; 111: 063920
- Interplay between Magnetism and Chemical Structure at Spinel-Spinel Interfaces Journal of Applied Physics 2012; 111: 093903
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Role of magnetic anisotropy in spin-filter junctions
PHYSICAL REVIEW B
2011; 83 (22)
View details for DOI 10.1103/PhysRevB.83.224426
View details for Web of Science ID 000292182900005
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Interfacial magnetism in CaRuO3/CaMnO3 superlattices grown on (001) SrTiO3
JOURNAL OF APPLIED PHYSICS
2011; 109 (7)
View details for DOI 10.1063/1.3561448
View details for Web of Science ID 000289952100260
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Organic spin-valves based on fullerene C-60
3rd International Meeting on Spins in Organic Semiconductors (SPINOS III)
ELSEVIER SCIENCE SA. 2011: 553–57
View details for DOI 10.1016/j.synthmet.2010.11.012
View details for Web of Science ID 000290424900002
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Magnetic domain structure of La0.7Sr0.3MnO3 nanoislands: Experiment and simulation
JOURNAL OF APPLIED PHYSICS
2011; 109 (7)
View details for DOI 10.1063/1.3544510
View details for Web of Science ID 000289952100243
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Ferromagnetism enhanced by structural relaxation of biaxially compressed LaCoO3 films
JOURNAL OF APPLIED PHYSICS
2011; 109 (7)
View details for DOI 10.1063/1.3545809
View details for Web of Science ID 000289952100248
- Magnetic Domain Structures of La0.7Sr0.3MnO3 Nanoislands: Experiment and Simulation Journal of Applied Physics 2011; 109: 07D712
- Organic Spin Valves Based on C60 Synthetic Metals 2011; 161: 553
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Modified magnetic ground state in NiMn2O4 thin films
PHYSICAL REVIEW B
2010; 82 (14)
View details for DOI 10.1103/PhysRevB.82.144419
View details for Web of Science ID 000282678900007
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Disorder and localization at the LaAlO3/SrTiO3 heterointerface
PHYSICAL REVIEW B
2010; 82 (16)
View details for DOI 10.1103/PhysRevB.82.165413
View details for Web of Science ID 000282569500012
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Magnetism at spinel thin film interfaces probed through soft X-ray spectroscopy techniques
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
2010; 322 (19): 2915-2921
View details for DOI 10.1016/j.jmmm.2010.05.005
View details for Web of Science ID 000279437700023
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Strain-Induced Changes in the Electronic Structure of MnCr2O4 Thin Films Probed by X-Ray Magnetic Circular Dichroism
PHYSICAL REVIEW LETTERS
2010; 105 (6)
Abstract
We show that the angular dependence of x-ray magnetic circular dichroism (XMCD) is strongly sensitive to strain-induced electronic structure changes in magnetic transition metal oxides. We observe a pronounced dependence of the XMCD spectral shape on the experimental geometry as well as nonvanishing XMCD with distinct spectral features in transverse geometry in compressively strained MnCr(2)O(4) films. The angular dependent XMCD can be described as a sum over an isotropic and anisotropic contribution, the latter linearly proportional to the axial distortion due to strain. The XMCD spectra are well reproduced by atomic multiplet calculations.
View details for DOI 10.1103/PhysRevLett.105.067405
View details for Web of Science ID 000284097700011
View details for PubMedID 20868013
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Room temperature magnetic barrier layers in magnetic tunnel junctions
PHYSICAL REVIEW B
2010; 81 (21)
View details for DOI 10.1103/PhysRevB.81.214421
View details for Web of Science ID 000278846400001
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Enhanced magnetization in epitaxial SrRuO3 thin films via substrate-induced strain
11th Joint MMM-Intermag Conference
AMER INST PHYSICS. 2010
View details for DOI 10.1063/1.3360345
View details for Web of Science ID 000277834300362
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Enhanced magnetism in epitaxial SrRuO3 thin films
APPLIED PHYSICS LETTERS
2010; 96 (8)
View details for DOI 10.1063/1.3327512
View details for Web of Science ID 000275027200058
- Tuning the Magnetic Domain Structure of Spin-polarized Complex Oxide Nanostructures Functional Oxide Nanostructures and Heterostructures, Mater. Res. Soc. Symp. Proc. 2010: 1256E
- Metallicity in LaTiO3 thin films induced by tetragonal lattice deformation Rapid Communications Physical Review B 2010; 81: 161101
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Competing magnetic anisotropies in an antiferromagnet-ferromagnet-antiferromagnet trilayer
JOURNAL OF APPLIED PHYSICS
2009; 106 (11)
View details for DOI 10.1063/1.3268481
View details for Web of Science ID 000272838600097
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Growth and characterization of superconducting spinel oxide LiTi2O4 thin films
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
2009; 469 (21): 1885-1891
View details for DOI 10.1016/j.physc.2009.05.009
View details for Web of Science ID 000270618800001
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Room-temperature photomagnetism in the spinel ferrite (Mn, Zn, Fe)(3)O-4 as seen via soft x-ray magnetic circular dichroism
PHYSICAL REVIEW B
2009; 80 (14)
View details for DOI 10.1103/PhysRevB.80.140413
View details for Web of Science ID 000271351500017
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Epitaxial growth and characterization of CaVO3 thin films
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
2009; 321 (18): 2852-2854
View details for DOI 10.1016/j.jmmm.2009.04.037
View details for Web of Science ID 000266823200031
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Enhanced magnetization of CuCr2O4 thin films by substrate-induced strain
53rd Annual Conference on Magnetism and Magnetic Materials
AMER INST PHYSICS. 2009
View details for DOI 10.1063/1.3058612
View details for Web of Science ID 000266633500230
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Ferromagnetism in tetragonally distorted LaCoO3 thin films
53rd Annual Conference on Magnetism and Magnetic Materials
AMER INST PHYSICS. 2009
View details for DOI 10.1063/1.3059606
View details for Web of Science ID 000266633500690
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Orientation and thickness dependence of magnetization at the interfaces of highly spin-polarized manganite thin films
PHYSICAL REVIEW B
2009; 79 (10)
View details for DOI 10.1103/PhysRevB.79.104417
View details for Web of Science ID 000264768600073
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Room temperature photoinduced magnetization of manganese zinc ferrite
APPLIED PHYSICS LETTERS
2009; 94 (7)
View details for DOI 10.1063/1.3083555
View details for Web of Science ID 000263599200047
- Epitaxial growth and character ization of CaVO3 films Journal of Magnetism and Magnetic Materials 2009; 321: 2852
- Magnetism and Transport of Superconducting Spinel Oxide LiTi2O4 Epitaxial Thin Films Physica C 2009; 469: 1885
- Probing the mechanism of room temperature photomagnetism in (Mn,Zn,Fe)3O4 using soft X-ray magnetic circular dichroism Rapid Communications Physical Review B 2009; 80: 140413
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In situ x-ray reflectivity studies of dynamics and morphology during heteroepitaxial complex oxide thin film growth
JOURNAL OF PHYSICS-CONDENSED MATTER
2008; 20 (26)
Abstract
We present a method, based on refraction effects in continuous, stratified media, for quantitative analysis of specular x-ray reflectivity from interfaces with atomic-scale roughness. Roughness at interfaces has previously been incorporated into this framework via Fourier transform of a continuous height distribution, but this approach breaks down when roughness approaches the atomic scale and manifests discrete character. By modeling the overall roughness at interfaces as a convolution of discrete and continuous height distributions, we have extended the applicability of this reflectivity model to atomic-scale roughness. The parameterization of thickness and roughness enables quantitative analysis of time-resolved in situ reflectivity studies of thin film growth, modeling step-flow, layer-by-layer and three-dimensional growth within a single framework. We present the application of this model to the analysis of anti-Bragg growth oscillations measured in situ during heteroepitaxial growth of La(0.7)Sr(0.3)MnO(3) on [Formula: see text] SrTiO(3) at different temperatures and pressures, and discuss the evolution of surface morphology.
View details for DOI 10.1088/0953-8984/20/26/264008
View details for Web of Science ID 000256560200009
View details for PubMedID 21694342
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Interface structure and transport of complex oxide junctions
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
2008; 26 (4): 1521-1525
View details for DOI 10.1116/1.2956626
View details for Web of Science ID 000258494400047
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Control of the magnetic and magnetotransport properties of La0.67Sr0.33MnO3 thin films through epitaxial strain
APPLIED PHYSICS LETTERS
2008; 92 (16)
View details for DOI 10.1063/1.2908051
View details for Web of Science ID 000255456100038
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Magnetism of NiMn2O4-Fe3O4 spinel interfaces
52nd Annual Conference on Magnetism and Magnetic Materials
AMER INST PHYSICS. 2008
View details for DOI 10.1063/1.2838320
View details for Web of Science ID 000255043200258
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Electronic structure of halogen doped CuCr2Se4
52nd Annual Conference on Magnetism and Magnetic Materials
AMER INST PHYSICS. 2008
View details for DOI 10.1063/1.2837241
View details for Web of Science ID 000255043200471
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Electrical transport and ferromagnetism in Ga1-xMnxAs synthesized by ion implantation and pulsed-laser melting
JOURNAL OF APPLIED PHYSICS
2008; 103 (7)
View details for DOI 10.1063/1.2890411
View details for Web of Science ID 000255043200061
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Influence of crystal field on anisotropic x-ray magnetic linear dichroism at the Co2+ L-2,L-3 edges
PHYSICAL REVIEW B
2008; 77 (6)
View details for DOI 10.1103/PhysRevB.77.064407
View details for Web of Science ID 000253764100044
- Magnetism and Chemical Structure of Spinel-Spinel Interfaces Journal of Applied Physics 2008; 103: 07B524
- Influence of Crystal Field on Anisotropic X-ray Magnetic Linear Dichroism at the Co L2,3 Edges Physical Review B 2008; 77: 64407
- Hybrid magnetic tunnel junction/spin filter device Proceeding of the SPIE 2008: 70360U
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Hybrid magnetic tunnel junction/spin filter device
Spintronics Conference 2008
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.797406
View details for Web of Science ID 000260571400012
- Potential Barrier Lowering and Electrical Transport at the LaAlO3/SrTiO3 Interface Condensed Matter Archive 2008; Sept.: arXiv:0809.0926v1
- Control of the magnetic and magnetotrasnport properties of La0.7Sr0.3MnO3 thin films through epitaxial strain Applied Physics Letters 2008; 92: 162504
- In-situ Reflectivity Studies of Dynamics and Morphology During Heteroepitaxial Complex Oxide Thin Film Growth Journal of Physics: Condensed Matter 2008; 20: 264008
- Electronic Structure of Halogen Doped CuCrSe4 Journal of Applied Physics 2008; 103: 07D711
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Hydrogen patterning of Ga1-xMnxAs for planar spintronics
24th International Conference on Defects in Semiconductors
ELSEVIER SCIENCE BV. 2007: 447–450
View details for DOI 10.1016/j.physb.2007.08.208
View details for Web of Science ID 000252041000106
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Probing the role of the barrier layer in magnetic tunnel junction transport
PHYSICAL REVIEW B
2007; 76 (22)
View details for DOI 10.1103/PhysRevB.76.220410
View details for Web of Science ID 000251986400011
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Magnetism and transport of CuCr2Se4 thin films
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
2007; 318 (1-2): 65-73
View details for DOI 10.1016/j.jmmm.2007.04.024
View details for Web of Science ID 000249890300011
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Angle-dependent Ni2+ x-ray magnetic linear dichroism: Interfacial coupling revisited
PHYSICAL REVIEW LETTERS
2007; 98 (19)
Abstract
Using x-ray magnetic linear dichroism (XMLD) for magnetometry requires detailed knowledge of its dependence on the relative orientation of polarization, magnetic moments, and crystallographic axes. We show that Ni2+ L(2,3) XMLD in cubic lattices has to be described as a linear combination of two fundamental spectra--not one as previously assumed. The spectra are calculated using atomic multiplet theory and the angular dependence is derived from crystal field symmetry. Applying our results to Co/NiO(001) interfaces, we find perpendicular coupling between Ni and Co moments.
View details for DOI 10.1103/PhysRevLett.98.197201
View details for Web of Science ID 000246413200050
View details for PubMedID 17677655
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Growth and structure of PbVO3 thin films
APPLIED PHYSICS LETTERS
2007; 90 (6)
View details for DOI 10.1063/1.2435944
View details for Web of Science ID 000244162300072
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Polar and magnetic properties of PbVO3 thin films
PHYSICAL REVIEW B
2007; 75 (6)
View details for DOI 10.1103/PhysRevB.75.060101
View details for Web of Science ID 000244533000001
- Magneto-Optical Kerr Effect in Multiferroic Nanostructures Proceedings of the Materials of Research Society Meeting 2007: T14.02
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2D-patterned ferromagnetic III-Mn-V semiconductors for planar spintronics
33rd International Symposium on Compound Semiconductors
WILEY-V C H VERLAG GMBH. 2007: 1755–58
View details for DOI 10.1002/pssc.200674285
View details for Web of Science ID 000246508900040
- Probing the Role of the Barrier in Magnetic Tunnel Junction Transport Rapid Communications Physical Review B 2007; 76: R220410
- In-situ Studies of Pulsed Laser Deposition Growth at CHESS Synchrotron Radiation News 2007; 20: 32
- 2D-patterned ferromagnetic III-Mn-V semiconductors: towards planar spintronics Physica Status Solidi C 2007; 4: 1755
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Magnetoelectric coupling in epitaxial CoFe2O4 on BaTiO3
APPLIED PHYSICS LETTERS
2006; 89 (18)
View details for DOI 10.1063/1.2370881
View details for Web of Science ID 000241757500076
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Spin-polarized conduction in oxide magnetic tunnel junctions with magnetic and nonmagnetic insulating barrier layers
APPLIED PHYSICS LETTERS
2006; 89 (18)
View details for DOI 10.1063/1.2372765
View details for Web of Science ID 000241757500074
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Anisotropic x-ray magnetic linear dichroism at the Fe L-2,L-3 edges in Fe3O4
PHYSICAL REVIEW B
2006; 74 (9)
View details for DOI 10.1103/PhysRevB.74.094407
View details for Web of Science ID 000240871700034
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X-ray scattering from real surfaces: Discrete and continuous components of roughness
PHYSICAL REVIEW B
2006; 74 (8)
View details for DOI 10.1103/PhysRevB.74.085419
View details for Web of Science ID 000240238900091
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Tuning magnetic domain structure in nanoscale La0.7Sr0.3MnO3 islands
NANO LETTERS
2006; 6 (6): 1287-1291
Abstract
The realization of spin-based devices requires high density, ordered arrays of magnetic materials with a high degree of spin polarization at surfaces. We have synthesized, for the first time, highly spin polarized complex magnetic oxide nanostructures embedded in a paramagnetic matrix by electron beam lithography and ion implantation. Imaging the magnetic domains with X-ray photoemission electron microscopy and magnetic force microscopy reveals a delicate balance between magnetocrystalline, magnetoelastic, and magnetostatic energies that can be tuned by the choice of SrTiO3 substrate orientation, film thickness, island size, and island shape.
View details for DOI 10.1021/nl060615f
View details for Web of Science ID 000238258300040
View details for PubMedID 16771596
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Thickness-dependent properties of (110)-oriented La1.2Sr1.8Mn2O7 thin films
JOURNAL OF APPLIED PHYSICS
2006; 99 (8)
View details for DOI 10.1063/1.2162087
View details for Web of Science ID 000237404200790
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Complex oxide-based magnetic tunnel junctions with nonmagnetic insulating barrier layers
JOURNAL OF APPLIED PHYSICS
2006; 99 (8)
View details for DOI 10.1063/1.2165791
View details for Web of Science ID 000237404200485
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Disorder-induced carrier localization in ultrathin strained SrRuO3 epitaxial films
JOURNAL OF APPLIED PHYSICS
2006; 99 (8)
View details for DOI 10.1063/1.2168437
View details for Web of Science ID 000237404200315
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Multiple time scales in diffraction measurements of diffusive surface relaxation
PHYSICAL REVIEW LETTERS
2006; 96 (5)
Abstract
We grew SrTiO3 on SrTiO3(001) by pulsed laser deposition, using x-ray scattering to monitor the growth in real time. The time-resolved small-angle scattering exhibits a well-defined length scale associated with the spacing between unit-cell high surface features. This length scale imposes a discrete spectrum of Fourier components and rate constants upon the diffusion equation solution, evident in multiple exponential relaxation of the "anti-Bragg" diffracted intensity. An Arrhenius analysis of measured rate constants confirms that they originate from a single activation energy.
View details for DOI 10.1103/PhysRevLett.96.055508
View details for Web of Science ID 000235252200048
View details for PubMedID 16486952
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Fabrication and design of an integrable subwavelength ultrabroadband dielectric mirror
APPLIED PHYSICS LETTERS
2006; 88 (3)
View details for DOI 10.1063/1.2164920
View details for Web of Science ID 000234757100002
- Fabrication and Design of an Integrable Sub-wavelength Dielectric Mirror Applied Physics Letters 2006; 88: 031102
- Complex oxide based magnetic tunnel junctions with nonmagnetic insulating barriers Journal of Applied Physics 2006; 99: 8K303
- Thickness Dependent Properties of (110)-Oriented La1.2Sr1.8Mn2O7 films Journal of Applied Physics 2006; 99: 8S902
- Disorder induced carrier localization in ultra-thin SrRuO3 thin films Journal of Applied Physics 2006; 99: 8F503
- Tuning magnetic domain structure in La0.7Sr0.3MnO3 islands by matrix and substrate strain Nano Letters 2006; 6: 1287
- Anisotropic X-ray magnetic linear dichroism at the L2,3 edges of Fe3O4 Physical Review B 2006; 74: 094407
- Spin-polarized conduction in oxide magnetic tunnel junctions with spinel/perovskite interfaces Applied Physics Letters 2006; 89: 182504
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Structural, magnetic, and electronic properties of (110)-oriented epitaxial thin films of the bilayer manganite La1.2Sr1.8Mn2O7
APPLIED PHYSICS LETTERS
2005; 87 (14)
View details for DOI 10.1063/1.2077850
View details for Web of Science ID 000232225700042
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Effects of thermal annealing in oxygen on the antiferromagnetic order and domain structure of epitaxial LaFeO3 thin films
11th International Workshop on Oxide Electronics
ELSEVIER SCIENCE SA. 2005: 108–12
View details for DOI 10.1016/j.tsf.2004.10.056
View details for Web of Science ID 000230879200025
- Novel method for the electrochemical synthesis of nickel-rich oxide nanowires Nano Science and Technology Institute Nanotechnology Conference 2005: 630
- Oscillating Surface Step Density: Observed Effects on PLD Growth Dynamics Physical Review Letters 2005; 94: 36102
- Observation of Electric Field Induced Magnetization Switching in Epitaxial Ferroelectric/Ferrimagnetic Nanocomposites Nano Letters 2005; 5: 1793
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Electrochemical Synthesis of Functionalized Nickel Oxide Nanowires
Electrochemical and Solid-State Letters
2005; 8 (9): D26-D30
View details for DOI 10.1149/1.1996511
- Synthesis of Magnetic Self-Assembled Nickel-Rich Oxide Nanowires using a Novel Electrochemical Process, in Magnetic Nanoparticles and Nanowires Proc. Mater. Res. Soc. 2005; 877E: S7.4
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Magnetics and magnetoresistance in epitaxial magnetite heterostructures
Symposium on Nanostructured Magnetic Materials held at the TMS 2004 Annual Meeting
SPRINGER. 2004: 1254–58
View details for Web of Science ID 000225175100002
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Colossal magnetoresistance materials-based junctions with antiferromagnetic insulating barriers
APPLIED PHYSICS LETTERS
2004; 85 (3): 437-439
View details for DOI 10.1063/1.1771815
View details for Web of Science ID 000222680400030
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Magnetotransport in exchange-coupled magnetite junctions
9th Joint Magnetism and Magnetic Materials Conference/ International Magnetics Conference
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2004: 2302–4
View details for DOI 10.1109/TMAG.2004.829168
View details for Web of Science ID 000223446700103
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Magnetic domain structure of colossal magnetoresistance thin films and islands
9th Joint Magnetism and Magnetic Materials Conference/ International Magnetics Conference
AMER INST PHYSICS. 2004: 7354–56
View details for DOI 10.1063/1.1687272
View details for Web of Science ID 000221657900278
- Broadband Mirror (1.12- 1.62μm) Using Single Layer Sub-Wavelength Grating IEEE Photonics Technology Letters 2004; 16: 1676
- Nearly Strain Free Heteroepitaxial System for Fundamental Studies of the pulsed laser deposition growth mechanism: EuTiO3 on SrTiO3 Journal of Applied Physics 2004; 96: 5324-8
- Magnetics and Magnetotransport in Epitaxial Magnetite Heterostructures Journal of Electronic Materials 2004; 33: 1254
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Dynamically tuning properties of epitaxial colossal magnetoresistance thin films
APPLIED PHYSICS LETTERS
2003; 82 (21): 3725-3727
View details for DOI 10.1063/1.1578186
View details for Web of Science ID 000182993700047
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Observation of inverse magnetoresistance in epitaxial magnetite/manganite junctions
JOURNAL OF APPLIED PHYSICS
2003; 93 (10): 7516-7518
View details for DOI 10.1063/1.1558662
View details for Web of Science ID 000182822300362
- The Effect of Changing Epitaxial Strain on Colossal Magnetoresistance Thin Films Proceedings of the Materials Research Society 2003
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In-plane transport of doped manganite trilayers
Symposium on Magnetoelectronics and Magnetic Materials-Novel Phenomena and Advanced Characterization
MATERIALS RESEARCH SOCIETY. 2003: 127–132
View details for Web of Science ID 000182563900017
- Studies of Epitaxial Magnetite/Manganite Base Trilayer Junctions Journal of Applied Physics 2003; 93: 7516
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Negative spin polarization of Fe3O4 in magnetite/manganite-based junctions
PHYSICAL REVIEW LETTERS
2002; 89 (27)
Abstract
Epitaxial oxide trilayer junctions composed of magnetite (Fe3O4) and doped manganite (La0.7Sr0.3MnO3) exhibit inverse magnetoresistance as large as -25% in fields of 4 kOe. The inverse magnetoresistance confirms the theoretically predicted negative spin polarization of Fe3O4. Transport through the barrier can be understood in terms of hopping transport through localized states that preserve electron spin information. The junction magnetoresistance versus temperature curve exhibits a peak around 60 K that is explained in terms of the paramagnetic to ferrimagnetic transition of the CoCr2O4 barrier.
View details for DOI 10.1103/PhysRevLett.89.276601
View details for Web of Science ID 000179949600044
View details for PubMedID 12513228
- Thermally Activated Sweep Rate Dependence of Magnetic Field Switching Field in Nanostructured Current Perpendicular Spin Valves Journal of Magnetism and Magnetic Materials 2002; 247: L237-241
- Integrated Platform for Photonic Crystal Devices at Near Infrared Wavelengths Applied Physics Letters 2002; 80: 1514
- Transport Properties of Cr-Patterned YBa2Cu3O7 Thin Films Proceedings of the Materials Research Society 2002; 689
- Toward the Integration of Photonic Crystal Structures with Optical Fiber Proceedings of the Materials Research Society 2002
- In-plane Transport of Doped Manganite Trilayers Proceedings of the Materials Research Society 2002; 746: Q6.8
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Microstructure and magnetic properties of cobalt ferrite thin films
8th Joint Magnetism and Magnetic Materials International Magnetics Conference (MMM-INTERMAG)
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2001: 2347–49
View details for Web of Science ID 000170910900342
- Lattice Distortions and Domain Structure in Epitaxial Manganite Thin Films Proceedings of the Materials Research Society 2001; 602: 207
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Lattice distortions and domain structure in epitaxial manganite thin films
Symposium on Magnetoresistive Oxides and Related Materials held at the 1999 MRS Fall Meeting
MATERIALS RESEARCH SOCIETY. 2001: 207–217
View details for Web of Science ID 000171563600029
- Nanoscale Magnetic Domain Structure in Colossal magnetoresistance Materials Islands Physical Review B Rapid Communications 2001; 64: 220404
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Epitaxial spinel ferrite thin films
ANNUAL REVIEW OF MATERIALS RESEARCH
2001; 31: 265-289
View details for Web of Science ID 000171808700012
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Magnetic anisotropy and strain states of (001) and (110) colossal magnetoresistance thin films
APPLIED PHYSICS LETTERS
2000; 77 (18): 2903-2905
View details for Web of Science ID 000090016800041
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Structural tuning of the magnetic behavior in spinel-structure ferrite thin films
PHYSICAL REVIEW B
2000; 62 (2): R779-R782
View details for Web of Science ID 000088190500013
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Domain structure and magnetotransport in epitaxial colossal magnetoresistance thin films
44th Annual Conference on Magnetism and Magnetic Materials
AMER INST PHYSICS. 2000: 6746–48
View details for Web of Science ID 000086728800278
- In-plane Uniaxial Anisotropy of Cobalt Doped Y3Fe5O12 Epitaxial Films Proceedings of the Materials Research Society 2000
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In-plane uniaxial magnetic anisotropy of cobalt doped Y3Fe5O12 epitaxial films
Symposium on Materials Issues for Tunable RF and Microwave Devices
MATERIALS RESEARCH SOCIETY. 2000: 95–100
View details for Web of Science ID 000089705600010
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Strain tuned magnetic properties of epitaxial cobalt ferrite thin films
Symposium on Materials Issues for Tunable RF and Microwave Devices
MATERIALS RESEARCH SOCIETY. 2000: 201–206
View details for Web of Science ID 000089705600027
- Thickness-dependence of the binary behavior of elongated single-domain cobalt nanostructures Journal of Applied Physics 2000; 87: 404
- Strained Tuned Magnetic Properties of Epitaxial Cobalt Ferrite Thin Films, Proceedings of the Materials Research Society 2000
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In-plane uniaxial magnetic anisotropy of cobalt-doped Y3Fe5O12 epitaxial films
APPLIED PHYSICS LETTERS
1999; 74 (20): 3026-3028
View details for Web of Science ID 000080352700040
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Anisotropy of magnetoresistance in (110)La0.7Sr0.3MnO3 thin films
43rd Annual Conference on Magnetism and Magnetic Materials
AMER INST PHYSICS. 1999: 4797–99
View details for Web of Science ID 000079850700173
- Magnetotransport and Magnetics in Compressively Strained Colossal Magnetoresistance Thin Films Applied Physics Letters 1999; 75: 2295
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Magnetic anisotropy of epitaxial cobalt ferrite thin films
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
1999; 191 (1-2): 1-8
View details for Web of Science ID 000077495100001
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Magnetic anisotropy of doped manganite thin films and crystals
7th Joint Magnetism and Magnetic Materials / International Magnetics Conference
AMER INST PHYSICS. 1998: 7064–66
View details for Web of Science ID 000077795500280
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Magnetic anisotropy and lattice distortions in the doped perovskite manganites
Symposium on Metallic Magnetic Oxides at the Materials-Research-Society Fall Meeting
MATERIALS RESEARCH SOCIETY. 1998: 41–51
View details for Web of Science ID 000073253400007
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Strain stabilized metal-insulator transition in epitaxial thin films of metallic oxide CaRuO3
APPLIED PHYSICS LETTERS
1997; 70 (22): 3035-3037
View details for Web of Science ID A1997XB50100036
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Temperature dependence of strong exchange coupling in ferrite heterostructures
9th International Symposium on the Structure and Properties of Magnetic Ultrathin Films, Multilayers, Surfaces, and Nanostructures
MATERIALS RESEARCH SOCIETY. 1997: 587–592
View details for Web of Science ID 000071594300083
- Temperature Dependence of Strong Exchange Coupling in Spinel Structure Ferrite Thin Films Proceedings of the Materials Research Society 1997
- Effects of Stress on the Magnetic Anisotropy of Doped Manganite Thin Films Proceedings of the Materials Research Society 1997
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Effect of lattice strain on growth mechanisms and electrical transport behavior of epitaxial CaRuO3 thin films
Symposium on Epitaxial Oxide Thin Films III, at the 1997 MRS Spring Meeting
MATERIALS RESEARCH SOCIETY. 1997: 199–204
View details for Web of Science ID A1997BJ69L00028
- The Role of Strain in Magnetic Anisotropy of Doped Manganite Thin Films Applied Physics Letters 1997; 71: 140
- Epitaxial SrRu2O4 Heterostructures IEEE Transactions on Applied Superconductivity 1997; 7 (2063)
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The effects of strain on the magnetic anisotropy of doped manganite thin films
Symposium on Epitaxial Oxide Thin Films III, at the 1997 MRS Spring Meeting
MATERIALS RESEARCH SOCIETY. 1997: 205–210
View details for Web of Science ID A1997BJ69L00029
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Resistivity of single- and multiple-domain thin films of PrBa2Cu3O7 from 0.05 to 500 K
PHYSICAL REVIEW B
1996; 54 (6): R3776-R3779
View details for Web of Science ID A1996VD67700028
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Exchange coupling in single-crystalline spinel-structure (Mn,Zn)Fe2O4/CoFe2O4 bilayers
PHYSICAL REVIEW B
1996; 53 (21): 14016-14019
View details for Web of Science ID A1996UQ72600012
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Interlayer exchange coupling in amorphous/crystalline NiFe2O4 thin-film bilayers
40th Annual Conference on Magnetism and Magnetic Materials
AMER INST PHYSICS. 1996: 5926–28
View details for Web of Science ID A1996UG87800124
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Magnetic properties of epitaxial ferrite multilayer films
40th Annual Conference on Magnetism and Magnetic Materials
AMER INST PHYSICS. 1996: 5923–25
View details for Web of Science ID A1996UG87800123
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Structure and magnetic properties of epitaxial spinel ferrite thin films
APPLIED PHYSICS LETTERS
1996; 68 (5): 714-716
View details for Web of Science ID A1996TR80100047
- Uniform Deposition YBa2Cu3O7 of thin films over an 8 inch diameter area by a 90° off-axis sputtering technique Applied Physics Letters 1996; 69: 3911
- Uniform Deposition YBa2Cu3O7 of thin films over an 8 inch diameter area by a 90° off-axis sputtering technique Applied Physics Letters 1996; 69: 3911
- Resistivity of Multiple-Domain and Single- Domain Thin Films of Pr Ba2Cu3O7 from 0.05 K to 500K Physical Review B 1996; 54: 3776
- Uniform Deposition YBa2Cu3O7 of thin films over an 8 inch diameter area by a 90° off-axis sputtering technique Applied Physics Letters 1996; 69: 3911
- Local Structure Study about Co in YBa 2 (Cu 1-x Co x )O 7 Thin Films Using Polarized XAFS Physical Review B 1996; 53: 13352
- Magnetic Properties of Epitaxial Ferrite Films Journal of Applied Physics 1996; 79: 5923
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Epitaxial single crystalline ferrite films for high frequency applications
Symposium on Epitaxial Oxide Thin Films II, at the 1995 MRS Fall Meeting
MATERIALS RESEARCH SOC. 1996: 473–483
View details for Web of Science ID A1996BF25N00068
- Exchange Coupling in Single Crystalline Spinel Structure (Mn,Zn)Fe 2O4 /CoFe2O4 Bilayers Physical Review B 1996; 53: 14016
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THERMALLY ACTIVATED FLUX MOTION IN ALPHA-AXIS YBA2CU3O7/PRBA2CU3O7 SUPERLATTICES
PHYSICAL REVIEW B
1995; 52 (9): 6858-6862
View details for Web of Science ID A1995RU54600088
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COEXISTENCE OF METALLIC AND NONMETALLIC CHARGE-TRANSPORT IN PRBA2CU3O7
PHYSICAL REVIEW B
1995; 51 (21): 15619-15622
View details for Web of Science ID A1995RC32900101
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PHONON ANOMALIES AT THE MAGNETIC PHASE-TRANSITION IN SRRUO3
PHYSICAL REVIEW B
1995; 51 (18): 12825-12828
View details for Web of Science ID A1995QZ33800089
- Thermally Activated Flux Motion in a-axis YBa2Cu3O7/PrBa2Cu3O7Superlattices Physical Review B 1995; 52: 6858
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RAMAN-SCATTERING IN FULLY A-AXIS ALIGNED YBA2CU3O7 FILMS - ABSENCE OF THE C-AXIS GAP FEATURE
International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV (M2S-HTSC IV)
ELSEVIER SCIENCE BV. 1994: 1067–1068
View details for Web of Science ID A1994QC69400173
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PHOTOEMISSION AND TUNNELING STUDY OF EPITAXIAL YBA2CU3O7-DELTA FILMS CLEANED USING AN ATOMIC OXYGEN BEAM
International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV (M2S-HTSC IV)
ELSEVIER SCIENCE BV. 1994: 1061–1062
View details for Web of Science ID A1994QC69400170
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OBSERVATION OF LONG LOCALIZATION LENGTH ALONG B-AXIS PRBA2CU3O7 IN A-AXIS YBA2CU3O7/A, B-AXIS PRBA2CU3O7 SUPERLATTICES
International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV (M2S-HTSC IV)
ELSEVIER SCIENCE BV. 1994: 1459–1460
View details for Web of Science ID A1994QC69400369
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TRANSPORT THROUGH 90-DEGREES [010] BASAL-PLANE-FACED TILT AND TWIST GRAIN-BOUNDARIES IN YBA2CU3O7-DELTA THIN-FILMS
APPLIED PHYSICS LETTERS
1994; 65 (12): 1584-1586
View details for Web of Science ID A1994PG92500037
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EVIDENCE FOR LONG LOCALIZATION LENGTH ALONG B-AXIS PRBA2CU3O7 IN A-AXIS YBA2CU3O7/A,B-AXIS PRBA2CU3O7 SUPERLATTICES
PHYSICAL REVIEW LETTERS
1994; 73 (2): 328-331
View details for Web of Science ID A1994NW18400028
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SURFACE STUDY OF YBA2CU3O7-DELTA EPITAXIAL-FILMS CLEANED BY AN ATOMIC OXYGEN BEAM
APPLIED PHYSICS LETTERS
1994; 64 (19): 2581-2583
View details for Web of Science ID A1994NK25800039
- Observation of Long Localization Length along b-axis PrBa2Cu3O7~d in a-axis YBa2Cu3O7/PrBa2Cu3O7 Superlattices Physica C 1994; 235-240: 1459
- Surface Study of YBa2Cu3O7 Epitaxial Films Cleaned by an Atomic Oxygen Beam, Applied Physics Letters 1994; 64: 2581
- Transport through 90.(010) basal-planefaced tilt and twist grain boundaries in YBa2Cu3O7 thin films Applied Physics Letters 1994; 65: 1584
- Photoemission and Tunneling Study of YBa2Cu3O7 Epitaxial Films Cleaned using an Atomic Oxygen Beam Physica C 1994; 235-240
- Evidence of Long Localization Length along b-axis PrBa2Cu3O7~d/ in a-axis YBa2Cu3O7/ a-b axis PrBa2Cu3O7 Superlattices Physical Review Letters 1994; 73: 328
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ANISOTROPIC TRANSPORT-PROPERTIES OF IN-PLANE-ALIGNED A-AXIS YBA2CU3O7 FILMS
PHYSICAL REVIEW B
1993; 48 (14): 10642-10645
View details for Web of Science ID A1993MB64800092
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GROWTH MECHANISMS AND PROPERTIES OF 90-DEGREES GRAIN-BOUNDARIES IN YBA2CU3O7 THIN-FILMS
PHYSICAL REVIEW B
1992; 46 (18): 11902-11913
View details for Web of Science ID A1992JX92900074
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A-AXIS-ORIENTED YBA2CU3O7/PRBA2CU3O7 SUPERLATTICES - GROWTH AND TRANSPORT-PROPERTIES
JOURNAL OF ALLOYS AND COMPOUNDS
1992; 183: 224-240
View details for Web of Science ID A1992HZ69800025
- Synthesis and Properties of a-axis YBa2Cu3O7/PrBa2CuO3O7 Superlattices Proceedings of the International Society of Optical Engineering 1992
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SYNTHESIS AND TRANSPORT-PROPERTIES OF A-AXIS YBA2CU3O7/PRBA2CU3O7 SUPERLATTICES
CONF ON PROGRESS IN HIGH-TEMPERATURE SUPERCONDUCTING TRANSISTORS AND OTHER DEVICES
SPIE - INT SOC OPTICAL ENGINEERING. 1992: 32–33
View details for Web of Science ID A1992BV53P00004
- Growth Mechanisms and Properties of 90° Grain Boundaries in YBa2Cu3O7 Thin Films Physical Review B1 1992; 46: 32
- A-axis YBa2Cu3O7/PrBa2Cu3O7 Superlattices: Synthesis and Transport Properties Journal of Alloys and Compounds 1992; 183: 224
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TRANSPORT-PROPERTIES OF A-AXIS YBA2CU3O7/PRBA2CU3O7 SUPERLATTICES
INTERNATIONAL CONF ON MATERIALS AND MECHANISMS OF SUPERCONDUCTIVITY HIGH TEMPERATURE SUPERCONDUCTORS 3
ELSEVIER SCIENCE BV. 1991: 2065–2066
View details for Web of Science ID A1991GX30800323
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VERTICAL TRANSPORT-PROPERTIES OF A-AXIS ORIENTED YBA2CU3O7/PRBA2CU3O7/YBA2CU3O7 SANDWICH JUNCTIONS
INTERNATIONAL CONF ON MATERIALS AND MECHANISMS OF SUPERCONDUCTIVITY HIGH TEMPERATURE SUPERCONDUCTORS 3
ELSEVIER SCIENCE BV. 1991: 2553–2554
View details for Web of Science ID A1991GX30900209
- Transport Properties of a-axis YBa2Cu3O7~d/PrBa2Cu3O7~d Superlattices Physica C 1991; 185-189: 2065
- Vertical Transport Properties of a-axis Oriented YBa2Cu3O7~d/PrBa2Cu3O7~d / YBa2Cu3O7~d Sandwich Junctions, Physica C 1991; 185-189: 2553
- Absence of Weak-link Behavior in YBa2Cu3O7 Connected by 90° (010) Twist Boundaries Nature 1991; 353: 544