Kinetics of ferromagnetic phase transition

Regularities of the temperature variation of the maximum of magnetic permeability μ'(T) in the frequency range up to 109 c/s for ferromagnetic oxides with structures of spinel, garnet and perovskite are studied. A certain interrelation is discovered between the laws of a changing maximum of the temperature dependence Tsub(m)(f) and appropriate regions of a complex magnetic permeability dispersion. The possibility of identifying the dispersion mechanism at different frequencies is shown on the basis of experimental regularities