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Tailoring magnetic anisotropy at the ferromagnetic/ferroelectric interface

Appl. Phys. Lett. 92, 122905 (2008); doi:10.1063/1.2901879

Published 26 March 2008

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Chun-Gang Duan,1,2 Julian P. Velev,1,3 R. F. Sabirianov,3,4 W. N. Mei,3,4 S. S. Jaswal,1,3 and E. Y. Tsymbal1,3
1Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588,USA
2Key Laboratory of Polarized Materials and Devices, East China Normal University, Shanghai 200062, People's Republic of China
3Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588,USA
4Department of Physics, University of Nebraska, Omaha, Nebraska 68182, USA
It is predicted that magnetic anisotropy of a thin magnetic film may be affected by the polarization of a ferroelectric material. Using a Fe/BaTiO3 bilayer as a representative model and performing first-principles calculations, we demonstrate that a reversal of the electric polarization of BaTiO3 produces a sizable change in magnetic anisotropy energy of Fe films. Tailoring the magnetic anisotropy of a nanomagnet by an adjacent ferroelectric material may yield entirely new device concepts, such as electric-field controlled magnetic data storage. ©2008 American Institute of Physics
History: Received 28 December 2007; accepted 4 March 2008; published 26 March 2008
Permalink: http://link.aip.org/link/?APPLAB/92/122905/1
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KEYWORDS and PACS

Keywords
PACS
  • 75.30.Gw
    Magnetic anisotropy
  • 77.55.+f
    Dielectric thin films
  • 77.80.-e
    Ferroelectricity and antiferroelectricity
  • 77.84.Dy
    Dielectric, piezoelectric, and ferroelectric niobates, titanates, tantalates, PZT ceramics, etc
  • 75.70.Cn
    Magnetic properties of interfaces
  • 77.22.Ej
    Dielectric polarization and depolarization
  • YEAR: 2008

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
AIP is a member of CrossRef AIP

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