Modelling the magneto refractive effect in giant magnetoresistive granular and layered materials

被引：26

作者：

Mennicke, RT ^{[1
]}

Bozec, D ^{[1
]}

Kravets, VG ^{[1
]}

Vopsaroiu, M ^{[1
]}

Matthew, JAD ^{[1
]}

Thompson, SM ^{[1
]}

机构：

[1] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 303卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

magnetorefractive effect; spectroscopy; contactless measurement; magnetoresistance; conduction; thin films;

D O I：

10.1016/j.jmmm.2005.10.233

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Zhang-Levy-Granovskii (Z-L-G) model of the magnetorefractive effect (MRE) in granular films and the Jacquet-Valet (J-V) model, originally developed for magnetic multilayers, are compared and their common origin demonstrated. Simulations in an extended Hagen-Rubens (H-R) model give new insight into the variation with wavelength of the MRE, and the relative dependence of giant magnetoresistance (GMR) and the MRE to material and experimental parameters such as bulk and interface scattering parameters, mean free paths, grain diameter, polarisation and reflection geometry is explored. The sensitivity of the size, wavelength dependence and the position of the depth of the minimum in the MRE spectra to the different parameters is verified. We establish powerful new equations to correlate the M RE and GMR, and we analyse their validity for a variety of film parameters. This suggests a new approach to the use of the M RE in sensing GMR in the films. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：92 / 110

页数：19

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