Stability of the one-dimensional precession regime of a domain wall under a dc magnetic field in a uniaxial ferromagnet

The conditions for parametric excitation of flexural vibrations of a domain wall (DW) are determined in the case where the DW moves under the action of a uniform dc magnetic field whose strength exceeds the Walker critical value (in the spin precession regime). Vibrations are excited when uniform precession caused by the magnetic field during DW translational motion breaks down. Using numerical methods, it is shown that steady-state large-amplitude vibrations can occur and that these vibrations significantly affect the average DW velocity