Domain-wall motion in random potential and hysteresis modeling

Two different approaches to hysteresis modeling are compared using a common ground based on energy relations, defined in terms of dissipated and store d energy. Using the Preisach model and assuming that magnetization is mainl y due to domain-wall motion, one can derive the expression of magnetization along a major loop typical of the Jiles-Atherton model and then extend its validity to cases where mean-field effects and reversible contributions ar e present. (C) 1998 American Institute of Physics. [S0021-8979(98)39311-1].