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Type: Artigo de periódico
Title: Giant magnetoresistance in magnetic granular Co15Cu85 alloys annealed by direct-current Joule heating
Author: Yu, RH
Zhang, XX
Tejada, J
Knobel, M
Tiberto, P
Allia, P
Vinai, F
Abstract: We have studied the structure and giant magnetoresistance (GMR) in the Co15Cu85 granular alloys prepared by melt-spinning and annealed by the direct-current (de) Joule heating. At T= 10 K, GMR as large as 50.0% (in a magnetic field up to 30 kOe) has been observed in a sample annealed with I = 6 A. The Joule-heated samples show higher GMR than those annealed by the conventional method. It is attributed to less content of residual Co in the Cu matrix for the de Joule-heated samples than that for the samples annealed in a furnace.
Country: Holanda
Editor: Elsevier Science Bv
Citation: Journal Of Magnetism And Magnetic Materials. Elsevier Science Bv, v. 164, n. 41671, n. 99, n. 104, 1996.
Rights: fechado
Identifier DOI: 10.1016/S0304-8853(96)00357-5
Date Issue: 1996
Appears in Collections:Unicamp - Artigos e Outros Documentos

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