Simulating the nonlinear dynamics of domain walls in weak ferromagnets

In this work, we numerically investigated the nonlinear dynamics of the interaction of a single-domain wall with the region of inhomogeneity of the magnetic-anisotropy constant (of rectangular or triangular shape) in weak ferromagnets. The dependence of the minimum speed necessary for going through the inhomogeneous region has been obtained from the parameters of the material, and a comparison with the known analytical results has been made.