Magnetic tuning of biquadratic exchange coupling in magnetic thin films

被引：29

作者：

Moser, A ^{[1
]}

Berger, A ^{[1
]}

Margulies, DT ^{[1
]}

Fullerton, EE ^{[1
]}

机构：

[1] Hitachi Global Storage Technol, San Jose Res Ctr, San Jose, CA 95120 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.91.097203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effective interlayer coupling between antiferromagnetically coupled hard and soft ferromagnetic thin films is investigated as a function of the magnetic bit length in the hard layer, which is controlled using a magnetic recording system. The interlayer coupling is explored by studying the magnetization reversal of the soft layer. As the bit length decreases, the coupling evolves from antiferromagnetic to biquadratic to uncoupled. These results are reproduced using a micromagnetic model and determine the applicability range of Slonczewski's fluctuation model of biquadratic coupling.

引用

页数：4

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