Dependence of exchange coupling on magnetization in Co-Ni/FeMn bilayers

被引：23

作者：

Zhou, SM ^{[1
]}

Chien, CL

机构：

[1] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[2] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[3] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.63.104406

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have determined the characteristics of exchange bias in Co-Ni/FeMn bilayers with a fixed FeMn thickness of 150 Angstrom but Co-Ni layer with different magnetizations by varying its composition. The exchange coupling energy Delta sigma = H(E)t(FM)M(FM) is not constant, but varies as c(M-FM)(1/2), due to the local magnetic field from the ferromagnetic layer that dictates the spin structure of the antiferromagnetic layer during field cooling.

引用

页数：4

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