Kink on the domain wall in orthoferrite
Chetkin M. V., Gadetskii S. N.
It is shown that a kink propagates along the domain wall in yttrium orthoferrite, moving at the velocity of sound, under conditions of high mobility. The velocity of the kink can attain the limiting value of 20 km/sec. The kink appears due to the strong instability of supersonic motion and the absence of hysteresis in the magnetic field dependence of the velocity.