Abstract
CoFe alloy is one of the competitive candidates for ferromagnetic material because it has a high value in Curie temperature. Magnetic susceptibility and curie temperature of CoFe alloy have been investigated by using micromagnetic simulation. It had done by using Vampire software with the Monte Carlo method. In this work, we have varied Fe(x) composition for 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, and 90% in 5nm nanocube and nanosphere geometry of Co1-xFex. The result showed that magnetization value changed to temperature changed. The curie temperature point is the point where the magnetization approaches zero. Magnetic susceptibility value also changed to temperature changed. Curie temperature point of CoFe alloy determined by considering the susceptibility point when it gains the peak of magnetic susceptibility value. It has been corresponding to Curie-Weiss law. Alloy Co80Fe20 nanocube had the highest Curie temperature value of 1500 K. Curie temperature values in the nanocube, and nanosphere geometry had almost the same.
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