DYNAMICS OF DOMAIN-WALLS IN FERROMAGNETS AND WEAK FERROMAGNETS

We try to give a description of domain wall motions in ferromagnets by a singular limit analysis starting from the Landau-Lifshitz model. Th e results of this paper assert that, for large magnetic anisotropy ene rgy, the domain wall motions approximate to the surface flow moving by a constant velocity or the mean curvature of the surfaces. (C) 1997 E lsevier Science B.V.