Abstract

Bubble material with its relatively high anisotropy and low magnetization provide an environment where wall structure, its movement, generation and annihilation dominate the dynamic character of the wall. Horizontal Bloch line motion, vertical Bloch line motion, backward 2π horizontal Bloch lines and both 2π and 4π horizontal Bloch lines each have their own dynamic character. For each case it is possible to model the motion in good agreement with the experimental results as long as low drive fields are used. The high drive region is yet to be understood, however, a dynamic wide wall comes from dynamic distortion through the thickness of the sample.

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