A. G. Shagalov
Institute of Metal Physics, Ural Division, Russian Academy of Sciences,
ul. S. Kovalevskoi 18, Ekaterinburg, 620219 Russia
Received May 21, 1997
Abstract—A model is suggested that describes the formation of domain structures in easy-plane magnets in an
ac low-frequency magnetic field circularly or linearly polarized in the easy plane. The model is based on the
strongly dissipative version of the sine-Gordon equation. Motion of domain walls in an ac magnetic field of
arbitrary amplitude is studied numerically. Critical values of the field amplitude have been revealed, which sep-
arate regions in which dynamic domain structures are qualitatively different.
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