Predicting effective magnetoelectric response in magnetic-ferroelectric composites via phase-field modeling

T. N. Yang, Jia Mian Hu, C. W. Nan, L. Q. Chen

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

A phase-field model coupled with constitutive equations is formulated to investigate the magnetoelectric cross-coupling in magnetic-ferroelectric composites. The model allows us to obtain equilibrium piezoelectric, piezomagnetic, dielectric, and magnetoelectric properties under a given magnetic or electric field, from the local distributions of polarization, magnetization, and strain in the composites. As an example, effective magnetoelectric coupling coefficient, i.e., magnetic-field-induced voltage output (or changes in polarization), of the CoFe2O4-BaTiO3 composites is numerically calculated. Influences of the phase connectivity and the phase fraction of the composites on the magnetoelectric coupling coefficient are discussed.

Original languageEnglish (US)
Article number052904
JournalApplied Physics Letters
Volume104
Issue number5
DOIs
StatePublished - Jan 1 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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