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, Universidad de Santiago de Chile, Santiago,, Chile) P. Vargas (Dept. de Fisica
TL;DR
This study investigates how grain size, anisotropy, and external factors influence the magnetic behavior of granular alloys using simulations that match experimental measurements.
Contribution
It introduces a Monte Carlo simulation approach to model magnetic behavior considering realistic grain structures and external influences.
Findings
Simulation results agree with experimental FC and ZFC curves.
Grain structure significantly affects magnetic irreversibility.
Annealing and external fields alter magnetic responses.
Abstract
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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