QUASISTATIC AND DYNAMIC PROCESSES OF REMAGNETIZATION IN SYSTEMS OF SMALL MAGNETIC PARTICLES

Abstract

The theoretical investigation of remagnetization processes in systems of small ferromagnetic particles and equilibrium structures of magnetization of a separate particle is the aim of the paper. As a result the theory of quasistatic and non-equilibrium processes of remagnetization for ensembles of small magnetic particles with the account of their interaction in the approximation of a local field has been constructed. Some new numerical methods for the solution of a quasistatic problem of micromagnetism have been developed. Dependences of parameters of hysteresis loops and magnetic viscosity for systems of small magnetic particles on their concentration have been obtained. The method for the restoration of the particle distribution on anisotropy constants has been sugggested. The optimum field for the orientation of systems of small particles in a viscous liquid has been forecastedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio