Dynamic rearrangement of vortex domain walls in multilayered films

The nonlinear dynamics of a single-vortex Bloch domain wall (DW) in a three -layered film with an easy axis (EA) parallel to the film surface and diffe rent values of the magnetization constant in the layers is considered in th is paper. The dynamic rearrangement of a DW in the course of its motion is considered under the action of an external magnetic field. The scenario of the rearrangement in such a system is shown to substantially differ from th at occurring in a homogeneous film. The critical fields, critical velocitie s, and mobilities of DWs are calculated depending on the magnitude of the m agnetization in the central layer of the film.