COMPUTATION OF MAGNETIC-FIELDS IN HYSTERETIC MEDIA

A newly developed vector Preisach-type model of hysteresis is applied to the computation of static magnetic fields in media with hysteresis. Time stepping technique is used to trace the time evolution of local magnetic fields which form the history of magnetizing process. At each time step, the magnetostatic problem is formulated in terms of an int egral equation and an efficient iterative algorithm is employed for so lving this problem. The technique has been used to simulate some magne tic recording processes. Sample results of these simulations are given in the paper.