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

Publication Type

Journal Article

Authors

Zhang, J.X., Y.L. Li, D.G. Schlom, L.Q. Chen, F. Zavaliche, Ramamoorthy Ramesh, Q.X. Jia

DOI

10.1063/1.2431574

Abstract

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 BaTi O3 -Co Fe2 O4 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. © 2007 American Institute of Physics.

Journal

Applied Physics Letters

Volume

Year of Publication

2007

ISSN

00036951

Notes

cited By 71

Research Areas

Ramesh Lab