Size-dependent electric voltage controlled magnetic anisotropy in multiferroic heterostructures: Interface-charge and strain comediated magnetoelectric coupling

Jia Mian Hu, Ce Wen Nan, Long Qing Chen

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Abstract

We present a phenomenological scheme to study the size-dependent electric voltage-controlled magnetic anisotropy in ferromagnetic (FM) and ferroelectric (FE) heterostructures. The FM layers are either metallic [Fe(001), Ni(001), Co(0001)] or half-metallic [(La, Sr)MnO3] films. Two magnetoelectric mechanisms, i.e., interface-charge and strain-mediated couplings, are considered. We show that the interface-charge-mediated coupling is the main mechanism for the magnetoelectic coupling when the FM film thickness is below a certain transition thickness dtr while the strain-mediated coupling dominates above dtr.

Original languageEnglish (US)
Article number134408
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number13
DOIs
StatePublished - Apr 8 2011

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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