Characteristic giant magnetoresistance of Fe/Cu granular films produced by cluster beam deposition and subsequent annealing

被引：6
作者：
Hihara, T
Sumiyama, K
Onodera, H
Wakoh, K
Suzuki, K
机构：
[1] Institute for Materials Research, Tohoku University
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1996年 / 217卷
基金：
日本学术振兴会;
关键词：
magnetoresistance; cluster beam technique; synthesis;
D O I：
10.1016/S0921-5093(96)10286-0
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
FexCu100-x granular films have been synthesized by a cluster beam technique. The magnetoresistance (MR) ratio monotonically increases with decreasing Fe content. This MR behavior is ascribed to the change in the magnetic states of Fe clusters. Mossbauer spectrum at 5 K indicates that the small fcc Fe clusters carry large magnetic moment around x=9, whereas the fcc Fe phase reveals antiferromagnetism at around x=22. After subsequent annealing at 673 K for 30 min. these Fe clusters grow and form larger ferromagnetic bcc Fe clusters and MR shows a maximum at around x=15.
引用
收藏
页码：322 / 325
页数：4
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