Electric Field Switching of the Magnetic Anisotropy of a Ferromagnetic Layer Exchange Coupled to the Multiferroic Compound BiFeO3

被引：184

作者：

Lebeugle, D. ^{[1
]}

Mougin, A. ^{[1
]}

Viret, M. ^{[2
]}

Colson, D. ^{[2
]}

Ranno, L. ^{[3
,4
]}

机构：

[1] Univ Paris 11, Phys Solides Lab, CNRS, UMR 8502, F-91405 Orsay, France

[2] CEA Saclay, CNRS, URA 2464, DSM IRAMIS SPEC, F-91191 Gif Sur Yvette, France

[3] CNRS, Inst Neel, F-38042 Grenoble, France

[4] Univ Grenoble 1, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 25期

关键词：

NEUTRON-DIFFRACTION; THIN-FILMS; BIAS;

D O I：

10.1103/PhysRevLett.103.257601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report here that a Permalloy layer deposited on top of a multiferroic BiFeO3 single crystal acquires an easy magnetic direction along the propagation vector of the cycloidal arrangement of antiferromagnetic moments in BiFeO3. This anisotropy originates from a direct magnetic coupling with the canted spins forming the cycloid. Moreover, we show that an electric field-induced change of electric polarization is able to toggle the direction of anisotropy in the ferromagnet through the magnetoelectric effect, which links the antiferromagnetic spins to the local polarization in BiFeO3.

引用

页数：4

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