Electrically controlled magnetization switching in a multiferroic heterostructure

被引：71
作者：
Chen, Yajie [1 ]
Fitchorov, Trifon [1 ]
Vittoria, Carmine [1 ]
Harris, V. G. [1 ]
机构：
[1] Northeastern Univ, Dept Elect & Comp Engn, Ctr Microwave Magnet Mat & Integrated Circuits, Boston, MA 02115 USA
来源：
APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 05期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.3475417
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A demonstration of magnetization reversal via the application of electric field across a multiferroic heterostructure, consisting of a FeCoV ribbon bonded to a lead magnesium niobate-lead titanate crystal, is presented. The magnetization switching occurs by an abrupt change in magnetization near ferromagnetic coercivity, coinciding with an electrical field-induced magnetic anisotropy field. Experiments reveal a converse magnetoelectric coupling of alpha=mu(0) (dM/dE) = 1.6 x 10(-7) s m(-1) upon magnetization reversal in the strain-mediated heterostructure. The frequency dependence of magnetization switching is presented and explained within the framework of a relaxation model for the multiferroic heterostructure. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3475417]
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页数：3
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