Identification and separation of two distinct contributions to the training effect in polycrystalline Co/FeMn bilayers

被引：44

作者：

Chan, M. K. ^{[1
]}

Parker, J. S. ^{[1
,2
]}

Crowell, P. A. ^{[1
]}

Leighton, C. ^{[2
]}

机构：

[1] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA

[2] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.77.014420

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We show that polycrystalline Co/FeMn bilayers display two distinct forms of training effect. The two can be identified and separated via their distinctive field cycle and antiferromagnet thickness dependences, in addition to their influence on the magnetization reversal. One mode is due to the biaxial anisotropy of the antiferromagnet and leads to an abrupt single cycle training (as seen in recent modeling), while the other is a gradual effect related to "depinning" of uncompensated antiferromagnet spins.

引用

页数：5

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