Electric field manipulation of magnetization at room temperature in multiferroic CoFe2O4/Pb(Mg1/3Nb 2/3)0.7 Ti0.3O3 heterostructures

J. J. Yang, Y. G. Zhao, H. F. Tian, L. B. Luo, H. Y. Zhang, Y. J. He, H. S. Luo

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Abstract

Multiferroic heterostructures were fabricated by growing ferrimagnetic CoFe2 O4 films on ferroelectric Pb (Mg1/3 Nb2/3) 0.7 Ti0.3 O3 substrates using pulsed laser deposition. Upon applying an electric field, the in-plane magnetization of the heterostructures increases and the out-of-plane magnetization decreases. Sharp and reversible changes in magnetization under electric field were also observed for the poled sample. The relative change in magnetization-electric field hysteresis loops were obtained for both the in-plane and out-of-plane magnetizations. Analysis of the results suggests that the electric field induced change in magnetic anisotropy via strain plays an important role in the magnetoelectric coupling in the heterostructures.

Original languageEnglish (US)
Article number212504
JournalApplied Physics Letters
Volume94
Issue number21
DOIs
StatePublished - 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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