Microkinetics of the Ising-Glauber model in the binary approximation

Phase transitions in ferromagnets described by the Ising model are investigated in terms of the solution of a hierarchy of microscopic equations for unary and binary distribution functions. A dynamical procedure for making the equations self-consistent is developed. For cubic crystals, an equation of state relating the long-range order parameter to temperature and magnetic field is obtained in analytic form. The temperature dependence of the magnetic susceptibility and of the specific heat are calculated. A stability criterion is obtained for the stationary states of the system is obtained. The dynamics of magnetization reversal by constant and ac external fields are investigated. Fiz. Tverd. Tela (St. Petersburg) 40, 519–523 (March 1998)