To Problem of Exchange Constants Interactions among Subsystems in Ferromagnetics

The structure of constants for the subsystem interaction in collinear ferromagnetics has been studied. Constants for uniform and non-uniform exchange interaction are estimated using the two-subsystem ferromagnetic (consisting of two types of magnetic clusters) as an example. When the Landau and Lifshits equation can be presented in a form of the Schrödinger equation, the system of motion equations is derived for ferromagnetic, consisting of two types of clusters. The structure of relaxation addends is suggested for this equation system. The product of the Hilbert constant and magnetization squared is noted to be approximate invariant for pure ferromagnetic metals (iron, cobalt and nickel).