Nonequilibrium Magnetisation Reversal by Periodic Impulsive Field in Ising Meanfield Dynamics

Details Nonequilibrium Magnetisation Reversal by Periodic Impulsive Field in Ising Meanfield Dynamics Nonequilibrium Magnetisation Reversal by Periodic Impulsive Field in Ising Meanfield Dynamics

2010-05-04

arxiv.org/abs/1005.0562v4

Physica Scripta 82 (2010) 065703

Physics

Condensed Matter

Statistical Mechanics

To appear in Physica Scripta (2010)

Scientific paper

10.1088/0031-8949/82/06/06703

We studied the nonequilibrium magnetisation reversal in kinetic Ising ferromagnets driven by periodic impulsive magnetic field in meanfield approximation. The meanfield differential equation was solved by sixth order Runge-Kutta-Felberg method. The periodicity and strength of the applied impulsive magnetic field play the key role in magnetisation reversal. We studied the minimum strength of impulsive field required for magnetisation reversal at any temperature as a function of the periodicity of the impulsive field. In the high temperature and small period this is observed to be linear. The results are compared with that obtained from Monte Carlo simulation of a three dimensional Ising ferromagnet.

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