Abstract
We have systematically investigated the effect of dipolar interaction strength on the dynamical hysteresis behavior of the in-plane uniaxial anisotropic nanodisk system modeled by the classical Heisenberg model under the effect of the time-dependent external out-of-plane periodic magnetic field. Dynamical hysteresis loops, as well as hysteresis quantities (hysteresis loop area, coercive field, remanent magnetization), have been examined both in-plane and out-of-plane magnetization components by means of Monte Carlo simulation based on Metropolis Algorithm. Our simulation results suggest that the response of the in-plane and out-of-plane components of the magnetization have different hysteresis characteristics. For instance, while the out-of-plane component of the magnetization has ordinary dynamically disordered hysteresis curves, bowtie-shaped hysteresis loops have been obtained for the in-plane component of the magnetization. Disappeared dynamical order has been observed with the rising strength of the dipolar interaction.
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