Preparation and giant magneto-impedance behavior of Co-based amorphous wires

被引：28
作者：
Zhao, Yangyong [1 ]
Hao, Haiying [1 ]
Zhang, Yong [1 ]
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
来源：
INTERMETALLICS | 2013年 / 42卷
基金：
国家高技术研究发展计划(863计划);
关键词：
Magnetic intermetallics; Rapid solidification processing; Magnetic applications; MAGNETOIMPEDANCE; MICROWIRES; SENSOR;
D O I：
10.1016/j.intermet.2013.05.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The giant magneto-impedance (GMI) in Co69.5Fe4.35Cr1Si8B17 microwires is studied. Wires with different diameter were fabricated by a modified glass-coated melt spinning technique, and then the glass was removed before the metallic nucleus was cold drawn. A transition from single-peak (SP) to double-peak (DP) GMI behavior was observed for the microwires after cold drawing. This could be explained by the induced circumferential stress during cold drawing, which changes the surface magnetic anisotropy the wire from helical domains to circular domains. GMI ratio as well as field sensitivity were improved significantly after cold drawing, and that would be significant for application. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：62 / 67
页数：6
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