Domain wall velocity in orthoferrites

Abstract

The domain wall velocity in YFeO3 and TbFeO3 single-crystal platelets is measured by the bubble-collapse method. Though weak knees like saturation occur at 4800, 8000, and 14 000 m/sec, the wall velocity in YFeO3 increases nearly linearly with increasing drive field up to 25 000 m/sec at a drive field of 370 Oe. The velocity in TbFeO3 increases linearly up to 3000 m/sec (600 Oe). A mechanism quite different from that in garnet films appears to be operative in orthoferrites.