期刊
APPLIED PHYSICS LETTERS
卷 94, 期 21, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3143622
关键词
cobalt compounds; ferrimagnetic materials; lead compounds; magnesium compounds; magnetic anisotropy; magnetic hysteresis; magnetic thin films; multiferroics; niobium compounds; pulsed laser deposition
资金
- 973 project [2009CB929202]
- National Science Foundation of China [50872065, 10674079]
- Tsinghua National Laboratory for Information Science and Technology (TNList) Cross-discipline Foundation
Multiferroic heterostructures were fabricated by growing ferrimagnetic CoFe2O4 films on ferroelectric Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3 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.
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