Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/80144
Type: Artigo de periódico
Title: Influence of Ge on magnetic and structural properties of Joule-heated Co-based ribbons: Giant magnetoimpedance response
Author: Muraca, D
Cremaschi, V
Knobel, M
Sirkin, H
Abstract: Studies of magnetic and structural properties of Fe(3.5)Co(66.5)Si(12-x)Ge(x)B(18) (x = 0, 3, and 6) soft magnetic ribbons obtained by melt-spinning were performed. The samples were submitted to Joule-heating treatments with different maximum current values (0.01, 0.05, 0.1, 0.2, and 0.8 A, respectively) with steps of 0.01A and times by step of 1, 2, and 10s). X-ray diffraction, temperature dependence of magnetization ( for the as-quenched samples), coercivity and giant magnetoimpedance (GMI), measured at different frequencies (100, 500, and 900 kHz, respectively) were performed. All the samples crystallized at annealing currents higher than 0.4 A, which was consistent with the magnetic hardening of the material. Coercivities less than 1 A/m were obtained for the three samples between 0.1 and 0.2 A. Maximum value of GMI response was observed for the sample without Ge in the as-quenched state. (c) 2008 Elsevier B.V. All rights reserved.
Subject: magnetoimpedance
soft magnetic material
amorphous alloy
joule heating
melt spinning
magnetic property
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.jmmm.2008.03.024
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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