Exchange bias model in ferromagnetic/antiferromagnetic bilayer with L12-type ordered antiferromagnet

被引：9
|
作者：
Mitsumata, C [1 ]
Sakuma, A
Fukamichi, K
机构：
[1] Hitachi Met Ltd, Adv Elect Res Lab, Kumagaya 3600843, Japan
[2] Tohoku Univ, Grad Sch Engn, Dept Appl Phys, Sendai, Miyagi 9808579, Japan
[3] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2005年 / 41卷 / 10期
关键词：
antiferromagnetic (AFM); exchange bias; exchange coupling; spin frustration; spin structure; noncollinear spin; Heisenberg model;
D O I：
10.1109/TMAG.2005.855223
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The exchange bias of the ferromagnetic (FM) and antiferromagnetic (AFM),bilayer having L1(2)-type ordered structure has been investigated within the framework of Heisenberg model. The triangle lattice of magnetic atoms in the AFM layer realizes the triangular spin structure due to geometrical spin frustrations. This noncollinear spin structure can bring about an exchange bias in the FM/AFM bilayer system. Under the influence of the exchange bias, the uncompensated spin element appears in the AFM layer, resulting in a shifted loop in magnetization curves, in accord with the measured loop by X-ray magnetic circular dichroism spectroscopy for an AFM layer.
引用
收藏
页码：2700 / 2702
页数：3
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