Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/81385
Type: Artigo de periódico
Title: MAGNETIC AND MAGNETOTRANSPORT PROPERTIES IN CO5CU95 MELT-SPUN ALLOYS
Author: YU, RH
ZHANG, XX
TEJADA, J
KNOBEL, M
TIBERTO, P
ALLIA, P
Abstract: Giant magnetoresistance (GMR) has been observed in Co5Cu95 alloys fabricated by melt-spinning. The highest MR change of 28.0% occurs for Co5Cu95 after annealing at 450 degrees C for 30 min. Based on the superparamagnetic assumption, the average size of Co particles embedded in Cu matrix, ranging from 3.0 to 6.0 nm, has been determined by simulating the magnetization curves at 295 K which is higher than the blocking temperatures for the samples. Comparison with phenomenological theory for GMR indicates that the interfacial spin-dependent scattering is the dominant scattering mechanism underlying GMR origin in granular systems. Additionally, for the samples in as-quenched state or annealed at temperature T-A=350 degrees C, the electron hybridization and superparamagnetic behaviors of fine Co particles may be responsible for the low value of MR change.
Country: EUA
Editor: Springer
Rights: fechado
Identifier DOI: 10.1007/BF01320844
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
WOSA1995TB77000001.pdf505.83 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.