Asymmetric reversal modes in ferromagnetic/antiferromagnetic multilayers

被引：122

作者：

Beckmann, B ^{[1
]}

Nowak, U ^{[1
]}

Usadel, KD ^{[1
]}

机构：

[1] Univ Duisburg Essen, D-47048 Duisburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.91.187201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Experimentally an asymmetry of the reversal modes has been found in certain exchange bias systems. From a numerical investigation of the domain state model evidence is gained that this effect depends on the angle between the easy axis of the antiferromagnet and the applied magnetic field. Depending on this angle the ferromagnet reverses either symmetrically, e.g., by a coherent rotation on both sides of the loop, or the reversal is asymmetric with a nonuniform reversal mode for the ascending branch, which may even yield a zero perpendicular magnetization.

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页数：4

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