Saturation velocity and in‐plane field effect on the velocity in bubble garnet films

摘要

The motion equations of an infinite straight wall in a bubble garnet film are introduced for finite viscous damping. The present theory differs from previous work in assuming that the nucleated horizontal Bloch line is stable even in the Neel region of the wall. Theoretical values of the peak velocity Vp and the saturation velocity V0 agree fairly well with the experimental data. In‐plane field effects on Vp and V0 have been investigated theoretically also. When the in‐plane field is applied perpendicular to the wall plane, Vp increases and V0 decreases slightly. On the other hand, Vp decreases and V0 increases slightly due to the in‐plane field parallel to the wall.