期刊
IEEE TRANSACTIONS ON MAGNETICS
卷 42, 期 3, 页码 358-362出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2005.863270
关键词
annealing; circumferential permeability; electrodeposition; giant magnetoimpedance; Joule heating; skin depth
We studied the effects of thickness and heat treatments on giant magnetoimpedance (GMI) of cobalt-coated silver wires from 1 kHz to 100 MHz, under axial static magnetic field of 2 kOe. Cobalt, of thickness ranging from 1 to 25 mu m, was electro-deposited on 47.7-mu m-diameter silver wires. The frequency dependence of GMI varied with cobalt thickness with a maximum of 176% in 10-mu m-thick cobalt at the characteristic frequency 2 MHz. The characteristic frequency decreased with increasing thickness of cobalt layer but it was rather insensitive to dc Joule heating and conventional furnace annealing. However, both heat treatments led to magnetic hardening and decrease in GMI ratio. Joule heating also induced anisotropy in wire structures normally dominated by axial anisotropy.
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