Exchange coupling ferromagnet/antiferromagnet bilayers with comparable TC and TN

被引：77

作者：

Wu, XW ^{[1
]}

Chien, CL ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.81.2795

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Exchange coupling has been observed in FM/AF bilayers with T-C close to, and less than, T-N. The exchange field H-E and coercivity H-c show an unusual temperature dependence due to the 1/M-F dependence and the influence of the FM ordering by the AF layer at T > T-C. The exchange coupling energy vanishes at T-N, whereas the intrinsic H-c vanishes at T-C. The FM/AF exchange coupling preserves some degree of ordering in the FM layer even at T > T-C.

引用

页码：2795 / 2798

页数：4

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