Electric-field control of local ferromagnetism using a magnetoelectric multiferroic

被引：1258

作者：

Chu, Ying-Hao ^{[1
,2
,3
]}

Martin, Lane W. ^{[1
,3
]}

Holcomb, Mikel B. ^{[2
,3
]}

Gajek, Martin ^{[2
]}

Han, Shu-Jen ^{[4
]}

He, Qing ^{[2
]}

Balke, Nina ^{[2
]}

Yang, Chan-Ho ^{[2
]}

Lee, Donkoun ^{[4
]}

Hu, Wei ^{[4
]}

Zhan, Qian ^{[1
,2
]}

Yang, Pei-Ling ^{[1
,2
]}

Fraile-Rodriguez, Arantxa ^{[5
]}

Scholl, Andreas ^{[6
]}

Wang, Shan X. ^{[4
]}

Ramesh, R. ^{[1
,2
,3
]}

机构：

[1] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[4] Stanford Univ, Dept Mat Sci & Engn, Palo Alto, CA 94305 USA

[5] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA

来源：

NATURE MATERIALS | 2008年 / 7卷 / 06期

关键词：

D O I：

10.1038/nmat2184

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

Multiferroics are of interest for memory and logic device applications, as the coupling between ferroelectric and magnetic properties enables the dynamic interaction between these order parameters. Here, we report an approach to control and switch local ferromagnetism with an electric field using multiferroics. We use two types of electromagnetic coupling phenomenon that are manifested in heterostructures consisting of a ferromagnet in intimate contact with the multiferroic BiFeO(3). The first is an internal, magnetoelectric coupling between antiferromagnetism and ferroelectricity in the BiFeO3 film that leads to electric-field control of the antiferromagnetic order. The second is based on exchange interactions at the interface between a ferromagnet (Co(0.9)Fe(0.1)) and the antiferromagnet. We have discovered a one-to-one mapping of the ferroelectric and ferromagnetic domains, mediated by the colinear coupling between the magnetization in the ferromagnet and the projection of the antiferromagnetic order in the multiferroic. Our preliminary experiments reveal the possibility to locally control ferromagnetism with an electric field.

引用

页码：478 / 482

页数：5

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