The hysteresis behavior of an amorphous core/shell magnetic nanoparticle

In this work, we employ the Monte Carlo simulation based on Metropolis algorithm to study the influence of the amorphization α, the temperature and the shell coupling Jsh/Jc on the hysteresis behavior of an amorphous core/shell magnetic nanoparticle. The magnetic hysteresis loops are obtained for different values of the system parameters. The coercive field and the remanent magnetization are also investigated. It is found that the hysteresis loops become narrower with increasing α and T and the area of hysteresis loop increases with increasing Jsh/Jc. It is also found that the coercive field exhibits a maximum which is depending on the value of α, and the remanent magnetization decreases with increasing T.