urpose ofthis study is to perform a compaction romagnetic powder for optimizing magnetic ng magnetic recording medium or a permanent et. The magnetic powder is treated . A circular disk and an elliptical disk are employed as particle models. To simulate the behavior of the particles, a particle dynamics simulation is proposed, where Coulomb's law for magnetized particles, applied magnetic field, elastic repulsive force ian contact and friction force are considered. ip between the direction of the applied magnetic tion of the punch is examined. It is commonly con §~dered that easy directions of magnetiztion are oriented constantly in the direction of an applied magnetic field. However, the simulate^ results show that the particles are not aligned SO because of the interaction forces between the ~a~n e t~~e d particles.