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Modelling the magnetorefractive effect in giant magnetoresistive granular and layered materials

Mennicke, R.T., Bozec, D., Kravets, V.G., Vopsaroiu, M., Matthew, J.A.D. and Thompson, S.M. (2006) Modelling the magnetorefractive effect in giant magnetoresistive granular and layered materials. Journal of Magnetism and Magnetic Materials, 303 (1). pp. 92-110. ISSN 0304-8853

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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 MRE and GMR, and we analyse their validity for a variety of film parameters. This suggests a new approach to the use of the MRE in sensing GMR in the films.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: York RAE Import
Date Deposited: 22 Apr 2009 09:39
Last Modified: 22 Apr 2009 09:39
Published Version: http://dx.doi.org/10.1016/j.jmmm.2005.10.233
Status: Published
Publisher: Elsevier Science B.V., Amsterdam
Identification Number: 10.1016/j.jmmm.2005.10.233
URI: http://eprints.whiterose.ac.uk/id/eprint/6737

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