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
收藏
页数:5
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