Effect of glass removal on the GMI effect of Co_(71.8)Fe_(4.9)Nb_(0.8)Si_(7.5)B_(15) amorphous glass-covered wires

作     者：CHEN Zheng BA Shan LI Deren LU Zhichao ZHOU Shaoxiong 

作者机构：Central Iron & Steel Research Institute Nanomaterials Engineering and Research Center Beijing 100081 China Research and Development Center Advanced Technology & Materials Co. Ltd. Beijing 100081 China Beijing Institute of Technology School of Science Beijing 100081 China Central Iron & Steel Research Institute Nanomaterials Engineering and Research Center Beijing 100081 China Research and Development Center Advanced Technology & Materials Co. Ltd. Beijing 100081 China Central Iron & Steel Research Institute Nanomaterials Engineering and Research Center Beijing 100081 China Research and Development Center Advanced Technology & Materials Co. Ltd. Beijing 100081 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2006年第25卷第Z1期

页      面：633-636页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This work was financially supported by the National High-Tech Research and Development Program (No. 2002AA302601) and the National Key Technologies Research and Development Program (No. 2004BA310A51) 

主　　题：giant magneto-impedance amorphous wires frequency 

摘      要：During the past several years, giant magneto-impedance effect (GMI) in amorphous wires has generated growing interest in the science community because of their applications in sensors. The giant magneto-impedance effect in Co71.8Fe4.9Nb0.8Si7.5B15 amorphous glass-covered wires (AGCW) consists of strong changes in the high frequency impedance with a small DC magnetic field. When f=1 MHz, there is no GMI effect due to the fact that the magnetic penetration depth is higher than their radius. As the frequency increases, the GMI effect becomes important in both the glass-covered wire and the wire after glass removal. Field dependence of the impedance has a similar behaviour to the AGCW ones, when a tensile stress is applied to the wire without glass cover.