Manipulation of magnetic coercivity of Fe film in Fe/BaTiO3 heterostructure by electric field

被引：75
|
作者：
Venkataiah, G. [1 ]
Shirahata, Y. [1 ]
Itoh, M. [1 ]
Taniyama, T. [1 ]
机构：
[1] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
来源：
APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 10期
关键词：
barium compounds; coercive force; dielectric polarisation; ferroelectric coercive field; ferromagnetic materials; interface magnetism; iron; magnetic anisotropy; magnetic thin films; magnetoelastic effects; metallic thin films; TRANSITIONS;
D O I：
10.1063/1.3628464
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The manipulation of magnetism at Fe/BaTiO3 interfaces is demonstrated via lattice distortion induced by thermal and electrical means. We find that the magnetic coercivity shows similar electric field dependence for positive and negative electric fields in the tetragonal phase of BaTiO3, whereas those in the orthorhombic and rhombohedral phases vary asymmetrically with respect to the polarity. The temperature dependent magnetization also reveals that the effect has its origin in the strong magnetoelastic coupling at the interface. The underlying mechanisms of the electric field dependence of the coercivity are discussed, associated with the different ferroelectric poling processes of BaTiO3. (C) 2011 American Institute of Physics. [doi:10.1063/1.3628464]
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页数：3
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