Annealing effect on exchange bias in Ni81Fe19/Cr50Mn50 bilayers

被引：0

作者：

Xi, HW ^{[1
]}

Bian, B ^{[1
]}

Zhuang, ZL ^{[1
]}

Laughlin, DE ^{[1
]}

White, RM ^{[1
]}

机构：

[1] Carnegie Mellon Univ, Dept Elect & Comp Engn, Ctr Data Storage Syst, Pittsburgh, PA 15213 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2000年 / 36卷 / 05期

关键词：

exchange bias; antiferromagnet; magnetic film; thermal annealing;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The effect of annealing on the exchange bias in Ni-81 Fe-10/Cr-50 Mn-50 bilayers was investigated. A large increase of the exchange field and coercivity was observed in the samples annealed at temperatures higher than 310 degrees C, The annealing causes the Mn atoms in the Cr50Mn50 layer to diffuse into the Ni-81 Fe-10 layer and form an antiferromagnetic NiFeMn phase, which coats on the Ni81Fe10 grain surface and contributes to the improvement of exchange bias, An increase of interface roughness due to the Mn diffusion also results in the exchange bias enhancement. The enhanced exchange field and coercivity were explained by the reversible and irreversible motions of NiFeMn moments of the inhomogeneous grains.

引用

页码：2644 / 2646

页数：3

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