A model for asymmetric giant magnetoimpedance in field-annealed amorphous ribbons

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A phenomenological model for the asymmetric giant magnetoimpedance (GMI) in field-annealed amorphous ribbons is developed. The effect of a surface crystalline layer on the GMI response is described in terms of an effective bias field appearing due to a coupling between the crystalline layer and amorphous phase. It is shown that the presence of the bias field changes drastically the GMI profile. At low frequencies, the domain-walls motion leads to a steplike change in the GMI response. At high frequencies, the domain-walls motion is damped, and the GMI profile exhibits asymmetric two-peak behavior. The calculated dependences are shown to be in a qualitative agreement with results of experimental studies of the asymmetric GMI in field-annealed Co-based amorphous ribbons.
10 pages, 3 figures

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Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/25865

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0502320
 http://arxiv.org/abs/cond-mat/0502320
 Appl. Phys. Lett. 85, 3507 (2004)
 doi:10.1063/1.1806565

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arXiv