Magnetoimpedance effect of current-annealed CoNiFe/Cu microtubes

被引：10
|
作者：
Atalay, F. E. [1 ]
Kaya, H. [1 ]
Atalay, S. [1 ]
机构：
[1] Inonu Univ, Sci & Art Fac, Dept Phys, TR-44280 Malatya, Turkey
来源：
PHYSICA B-CONDENSED MATTER | 2008年 / 403卷 / 17期
关键词：
magnetoimpedance; magnetic tubes; composite wires;
D O I：
10.1016/j.physb.2008.02.034
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A cobalt/nickel/iron (CoNiFe) magnetic layer was electrodeposited on a 50-mu m-diameter non-magnetic Cu wire in a sulphate bath using a constant voltage. Electrodeposited CoNiFe composite wires were submitted to current annealing at 540 mA. It was found that annealing time less than 1 min removes internal stresses produced during fabrication and that annealing times longer than 5 min induce circumferential anisotropy. Non-annealed sample showed a magnetoimpedance (MI) ratio of 412%. A maximum MI ratio of 583% was obtained after I min of current annealing. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：2917 / 2923
页数：7
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