Phase Transitions in the Two-Layer Ferrite-Garnet Film

Abstract

The peculiarities of domain structures (DS) have been investigated in the two-layer film of (YGdTm)3(FeGa)5O12/(YEu)3(FeGa)5O12 composition with a magnetic compensation point (TC) in one of the layers and in the single-layer witnesses-films. It is shown that a change in the ratio of energies of magnetostatic and exchange interactions between the layers under temperature change induces a phase transition (PT) in the domain structure and a spin-reorientation phase transition (SRPT).