Influence of Bias Field on Bubble Velocity

Abstract

Bubble velocity has been measured for various bias fields between the bubble collapse and run-out fields by the bubble transport method. In a high mobility garnet film, bubble velocity does not show any scatter for the bias fields near the collapse field, but it shows a large scatter for the bias fields near the run-out field. On the other hand, in a low mobility garnet film, the bubble velocity does not show any scatter for any bias field. These results indicate that the velocity scatter is caused by the dynamic conversion and that the dynamic conversion cannot occur easily when a bias field is near the collapse field.