Giant magnetoimpedance in glass-covered amorphous microwires at microwave frequencies

被引：0

作者：

da Silva, RB ^{[1
]}

de Andrade, AMH ^{[1
]}

Severino, AM ^{[1
]}

Viegas, ADC ^{[1
]}

Sommer, RL ^{[1
]}

机构：

[1] Univ Fed Santa Maria, Dept Fis, BR-97105900 Santa Maria, RS, Brazil

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 320卷 / 1-4期

关键词：

magnetoimpedance; microwire; amorphous and glass covered;

D O I：

10.1016/S0921-4526(02)00674-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this work, results on the giant magnetoimpedance (GMI) of a glass-covered amorphous microwires with nominal compositions Co70.4Fe4.6Si15B10 and Fe77.5Si7.5B15 are presented. The impedance Z = R + iX has been investigated as function of frequency (up to 1.8 GHz) and magnetic field (up to +/-400 Oe), using a HP4396B impedance analyzer and an appropriate coaxial microwave cavity. The effects of the thermal treatments (Joule heating, from 20 mA up to 100 mA for 10 min) for anisotropy induction and, as a consequence, for GMI effect have been investigated. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：156 / 158

页数：3

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