Spin structure at the interface of exchange biased FeMn/Co bilayers

被引：127

作者：

Antel, WJ ^{[1
]}

Perjeru, F ^{[1
]}

Harp, GR ^{[1
]}

机构：

[1] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.83.1439

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The origin of exchange biasing in FeMn/Co bilayers is elucidated using magneto-optic Kerr effect and x-ray dichroism. It is found that the FeMn spin structure is aligned with the ferromagnetic (FM) moment of the Co layer, indicating that "spin flop" coupling is not the mechanism for exchange bias in this system. Futhermore, the Fe forms an uncompensated surface. It is likely that the FM Fe spins play a key role in the generation of the exchange bias. These results provide new insight to the mechanism of exchange biasing in metallic ferromagnetic/antiferromagnetic systems.

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页码：1439 / 1442

页数：4

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