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Type: Artigo de periódico
Title: Giant Magnetoresistance And Remanence In Granular Cocu Codeposited Films
Author: Viegas A.D.C.
Geshev J.
Schmidt J.E.
Ferrari E.F.
Abstract: We present experimental magnetoresistance, magnetization, and remanence data for CoCu granular films obtained by electron beam codeposition, subsequently submitted to a thermal treatment. The magnetization measurements show coexistence of superparamagnetic and ferromagnetic (or blocked superparamagnetic) Co grains. By modeling the experimental magnetization curves, the distribution function of the superparamagnetic particle size, the volume fraction of the blocked part of the Co particles, and their saturation magnetization are obtained. SM plots are constructed using the remanence curves. A correlation between the changes of the OM parameters and those of the giant magnetoresistance, caused by the annealing, is discussed. © 1998 American Institute of Physics.
Rights: aberto
Identifier DOI: 
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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