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arxiv: cond-mat/0205575 · v1 · submitted 2002-05-28 · ❄️ cond-mat.mtrl-sci

The role of the alloy structure in the magnetic behavior of granular systems

C. S. M. Bastos , M. Bahiana , W. C. Nunes , M. A. Novak (Instituto de Fisica , Universidade Federal do Rio de Janeiro , Rio de Janeiro , RJ , Brazil) D. Altbir (Dept. de Fisica
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Universidad de Santiago de Chile Santiago Chile) P. Vargas (Dept. de Fisica Universidad Tecnica Federico Santa Maria Valparaiso Chile) M. Knobel (Instituto de Fisica ``Gleb Wataghin'' Universidade Estadual de Campinas Campinas Sao Paulo Brazil)
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classification ❄️ cond-mat.mtrl-sci
keywords curvesgranularalloybehavioreffectgrainmagneticmagnetization
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The effect of grain size, easy magnetization axis and anisotropy constant distributions in the irreversible magnetic behavior of granular alloys is considered. A simulated granular alloy is used to provide a realistic grain structure for the Monte Carlo simulation of the ZFC-FC curves. The effect of annealing and external field is also studied. The simulation curves are in good agreement with the FC and ZFC magnetization curves measured on melt spun Cu-Co ribbons.

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