Phase-field model for epitaxial ferroelectric and magnetic nanocomposite thin films

被引：71
|
作者：
Zhang, J. X. [1 ]
Li, Y. L.
Schlom, D. G.
Chen, L. Q.
Zavaliche, F.
Ramesh, R.
Jia, Q. X.
机构：
[1] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
[2] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[4] Los Alamos Natl Lab, MPA STC, Los Alamos, NM 87545 USA
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 05期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.2431574
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A phase-field model was developed for studying the magnetoelectric coupling effect in epitaxial ferroelectric and magnetic nanocomposite thin films. The model can simultaneously take into account the ferroelectric and magnetic domain structures, the electrostrictive and magnetostrictive effects, substrate constraint, as well as the long-range interactions such as magnetic, electric, and elastic interactions. As an example, the magnetic-field-induced electric polarization in BaTiO3-CoFe2O4 nanocomposite film was analyzed. The effects of the film thickness, morphology of the nanocomposite, and substrate constraint on the degree of magnetoelectric coupling were discussed.
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页数：3
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