Vector hysteresis modeling by combining Stoner-Wohlfarth and Preisach models

A vector hysteresis modeling algorithm is suggested to model the hysteresis phenomena of the isotropic magnetic material. The algorithm combines the S toner-Wohlfarth and Preisach models. The vector property of each single dom ain magnetic particle with uniaxial anisotropy, which is supposed to consti tute the magnetic material, when the direction and magnitude of applied fie ld are changed is modeled by using the Staner-Wohlfarth model. The coercive and interaction fields of each particle are modeled by using the Preisach model. In the algorithm the easy axes are assumed randomly distributed over all possible directions. The algorithm reduces to a scalar Preisach model if only one easy axis is defined. The developed algorithm is applied to the analysis of the magnetization of the isotropic rubber ferrite permanent ma gnet, and the result is compared with experimental one.