To the theory of remagnetization kinetics of magnetic composites

Results of theoretical study of kinetics of the remagnetization of an ensemble of interacting ferromagnetic particles immobilized in a host non -magnetic medium are presented. The results show that the influence of interparticle interaction on the remagnetization is determined by the amplitude of the applied alternating field: it slows down this process in a weak field and accelerates it in a strong field. The interaction of particles increases both components of the complex magnetic susceptibility of the composite.