On the theory of dynamic domain structures of the "leading-center" type: 2. Dynamic properties of a system of concentric ring domains

To theoretically describe dynamic domain structures of the "leading-center" type that were found experimentally in iron garnet films with perpendicular anisotropy placed in an ac magnetic field, a phenomenological model representing a system of concentric ring domains is suggested. The investigation of the effect of the magnetic field amplitude and frequency and of the material characteristics on the dynamic stability of such a system was performed in the dissipative approximation. The theoretical results obtained qualitatively agree with the available experimental data.