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Applied Physics Letters / Volume 96 / Issue 9 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 96, 092510 (2010); http://dx.doi.org/10.1063/1.3330890 (3 pages)

Strain-driven spin reorientation in magnetite/barium titanate heterostructures

G. E. Sterbinsky1, B. W. Wessels1, J.-W. Kim2, E. Karapetrova2, P. J. Ryan2, and D. J. Keavney2

1Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208-3108, USA
2Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA

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(Received 16 December 2009; accepted 2 February 2010; published online 3 March 2010)

We report spin reorientation transitions in a Fe3O4/BaTiO3 heterostructure driven by strain at the structural phase transitions of BaTiO3. These spin reorientations result from the emergence of an in-plane uniaxial magnetic anisotropy. The magnetoelastic response of Fe3O4 to the variations in epitaxial strain that occur at the BaTiO3 phase transitions gives rise to the uniaxial anisotropy. The anisotropy energies calculated from the in-plane strain are in quantitative agreement with a change in the Zeeman energy.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

barium compounds, epitaxial layers, ferromagnetic materials, internal stresses, iron compounds, magnetic anisotropy, magnetic structure, magnetic transitions, magnetoelastic effects, spin dynamics, Zeeman effect

PACS

  • 75.25.-j

    Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)

  • 75.40.Gb

    Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)

  • 75.30.Gw

    Magnetic anisotropy

  • 75.80.+q

    Magnetomechanical effects, magnetostriction

  • 75.50.Dd

    Nonmetallic ferromagnetic materials

  • 75.30.Kz

    Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3330890

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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