Simulations for deformation processes of arbitrary domain shape in MO media

Abstract

A new method is developed to simulate how a magnetic domain is stabilized in magneto optical recording. Based on the method in which dynamics of a domain wall is estimated from the calculation of force on the wall, the wall is assumed as the zero thickness line in arbitrary shapes. With this method the deformation processes of arbitrary domain shapes including not only circular and crescent ones can be treated. The deformation processes of the crescent-shape initial domains are performed under the uniform temperature and the uniform bias field.