期刊
MATERIALS LETTERS
卷 168, 期 -, 页码 200-202出版社
ELSEVIER
DOI: 10.1016/j.matlet.2016.01.084
关键词
Magnetic materials; Thin films; Sputtering; Interfaces
资金
- National Natural Science Foundation of China [51271172, 11204283]
- Science Foundation of Zhejiang province [LQ14A040007, LY13E020005]
Exchange coupling has been investigated in FeMn/Gd bilayers where the Curie temperature (T-c) of Gd is much lower than the Neel temperature (T-N) of FeMn. The coercivity (H-c) exhibits unusual temperature dependence. As temperature increases, it decreases at first, then goes up to the maximum and keeps it in medium temperature range, finally drops rapidly and disappears at T-N. The exchange bias field (H-E) is negative initially and its magnitude decreases monotonically with increasing temperature, then it turns to be positive, finally disappears at high temperatures. The anomalous H-c(T) behavior may be ascribed to the non-collinear coupling interaction at the FeMn/Gd interface. The positive HE can be attributed to the antiferromagnetic coupling between the interfacial Gd and FeMn moments. Moreover, the anti ferromagnetic ordering adjacent to the FeMn layer may be responsible for inducing the exchange coupling at T-C< T < T-N. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据