Influence of in-plane fields on the soft segments in garnet bubble films

The influence of in-plane field H-ip on the soft segments in garnet bubble films was experimentally studied. It was found that H-ip affects the stripe -to-bubble transition field of soft domain segments H-sb and the collapse f ield of soft bubbles H-o. Moreover, H-sb and H-o change along with H-ip, an d both of them are related to the crystal direction. Comparing the results for different crystal directions, we find a dividing in-plane field (H-ip)( d) related to the parameters of the samples. (H-ip)(d) is about two times o f the saturation magnetization 4 pi M-s. The dividing in-plane held (H-ip)( d) thus divides the influence of H-ip on soft segments into two regions: hi gh H-ip region and low H-ip region. (C) 1999 Elsevier Science B.V. All righ ts reserved.