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Type: Artigo de periódico
Title: Hysteretic giant magnetoimpedance effect analyzed by first-order reversal curves
Author: Beron, F
Valenzuela, LA
Knobel, M
Melo, LGC
Pirota, KR
Abstract: We applied the first-order reversal curve method to hysteretic giant magnetoimpedance (GMI) of soft magnetic amorphous ribbons with a well-defined transversal domain structure and quasi-anhysteretic magnetization behavior. In opposition to major curve, it gives access to the distribution of local irreversible changes of the transverse permeability, which undergo a gradual transition. Results show that hysteretic GMI effect consists of three distinct regimes depending on the applied field. An interlinked hysteron/anti-hysteron model is proposed to analyze the obtained results, which allows one to follow the influence of frequency and anisotropy upon the irreversible switches probed by GMI. (C) 2011 Elsevier B.V. All rights reserved.
Subject: Giant magnetoimpedance (GMI)
First-order reversal curve (FORC)
Amorphous ribbons
Country: Holanda
Editor: Elsevier Science Bv
Citation: Journal Of Magnetism And Magnetic Materials. Elsevier Science Bv, v. 324, n. 8, n. 1601, n. 1605, 2012.
Rights: fechado
Identifier DOI: 10.1016/j.jmmm.2011.12.013
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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