Abstract:
The results of theoretical calculations indirectly indicate the presence of a single-domain state in a submicron film of the yttrium iron garnet type with a thickness of less than 100 nm, obtained by liquid-phase epitaxy, which is not detected by standard methods due to its small thickness. Unidirectional rotation of the magnetization vector during cyclic remagnetization of such a film is predicted. Within one cycle, four reorientation transitions are detected, two of which occur in a field of the order of the cubic anisotropy field, and the other two – in a field of the order of $4\pi M$.
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