Effect of direct exchange coupling between antiferromagnetic grains on magnetic behavior of ferro/antiferromagnetic exchange coupled polycrystalline layer systems

被引:20
作者
Fujiwara, H
Zhang, KL
Kai, T
Zhao, T
机构
[1] Univ Alabama, MINT, Dept Phys & Astron, Tuscaloosa, AL 35487 USA
[2] Univ Alabama, MINT, Ctr Mat Informat Technol, Tuscaloosa, AL 35487 USA
关键词
ferromagnet; antiferromagnet; exchange coupling; polycrystalline; multilayer; rotational hysteresis; training effect; model;
D O I
10.1016/S0304-8853(01)00368-7
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Two fundamental properties, unidirectional rotational hysteresis and training effect, of ferro/antiferromagnetic exchange coupled polycrystalline layer systems are discussed in which a direct exchange coupling between antiferromagnetic grains is found to play a decisive role. A new model is proposed to describe the systems. The analysis of some experimental data suggests the existence of preferential angular distribution of anisotropy axes of antiferromagnetic grains. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:319 / 328
页数:10
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