Modeling of asymmetric giant magnetoimpedance in amorphous ribbons with a surface crystalline layer

被引：11
作者：
Buznikov, NA
Kim, CG
Kim, CO
Yoon, SS
机构：
[1] Russian Acad Sci, Inst Theoret & Appl Electrodynam, Moscow 125412, Russia
[2] Chungnam Natl Univ, Res Ctr Adv Magnet Mat, Taejon 305764, South Korea
[3] Andong Natl Univ, Dept Phys, Andong 760749, South Korea
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 288卷
关键词：
amorphous ribbons; magnetoimpedance; transverse permeability; bias field;
D O I：
10.1016/j.jmmm.2004.08.028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A model describing the asymmetric giant magnetoimpedance (GMI) in field-annealed amorphous ribbons is proposed. It is assumed that the ribbon consists of an inner amorphous core and surface hard magnetic crystalline layers. The model is based on a simultaneous solution of linearized Maxwell equations and Landau-Lifshitz equation. The coupling between the surface layers and the amorphous core is described in terms of an effective bias field. Analytical expressions for the frequency and field dependences of the ribbon impedance are found. The calculated dependences are in a qualitative agreement with results of experimental studies of the high-frequency asymmetric GMI in field-annealed amorphous ribbons. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：130 / 136
页数：7
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