Giant direct magnetoelectric effect in strained multiferroic heterostructures

被引：18

作者：

Janolin, Pierre-Eymeric ^{[1
]}

Pertsev, Nikolay A. ^{[1
,2
]}

Sichuga, David ^{[3
]}

Bellaiche, L. ^{[4
,5
]}

机构：

[1] Ecole Cent Paris, Lab Struct Proprietes & Modelisat Solides, UMR CNRS, F-92295 Chatenay Malabry, France

[2] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

[3] Augusta Tech Coll, Dept Phys, Augusta, GA 30906 USA

[4] Univ Arkansas, Inst Nanosci & Engn, Fayetteville, AR 72701 USA

[5] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 14期

基金：

美国国家科学基金会;

关键词：

MAGNETOSTRICTION; FILMS;

D O I：

10.1103/PhysRevB.85.140401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The direct magnetoelectric (ME) effect mediated by lattice strains induced in a ferroelectric film by a ferromagnetic substrate is evaluated using first-principles-based calculations. To that end, the strain sensitivity of ferroelectric polarization and the film permittivity are calculated as a function of the in-plane biaxial strain for Pb(Zr0.52Ti0.48)O-3 films under various depolarizing fields. It is found that the ME voltage coefficient varies nonmonotonically with this strain and may reach giant values exceeding 100 V cm(-1) Oe(-1) over a strain range that can be controlled through the electrical boundary conditions.

引用

页数：5

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