Modelling the hysteresis curves of ferromagnetic amorphous wires

Abstract

We present a model to examine the infuence of various pinning regions on the magnetic hysteresis of a ferromagnetic amorphous wire by revealing the correlation between its magnetic hysteresis and pinning region configuration. Magnetization is performed with the motion of 180-degrees domain walls. Domain configuration in every stage of magnetization is traced by analyzing the total energy of domain-domain, domain wall-domain,domain wall-pinning center, and external magnetic field interactions. The predicted hysteresis loops obtained are found to be in good agreement with the experimental ones in literature.