Contraction Motions of Stripe Domains in Bubble Films with In-Plane Magnetization Layers

抄録

Contraction motions of stripe domains in several types of hard bubble suppressed LPE-garnet films are studied by a time-resolved observation technique. Saturation velocities observed are substantially larger than those observed in collapse and translation techniques. A clear asymmetry in domain wall velocities with respect to the polarity of the external in-plane field is observed. The general feature of the asymmetry does not depend on the types of in-plane magnetization layers.
It is concluded that horizontal Bloch lines punch through at surfaces with in-plane magnetization layers as well as at as-grown surfaces, after a certain number of horizontal Bloch lines have been accumulated. The overshoot up to 100 μm is observed and the number of accumulated horizontal Bloch lines in a stationary state is estimated to be several tens in a typical case.