Magnetization distributions in Permalloy bubble‐domain propagation circuits

Recent magneto‐optical measurements of the magnetization in Permalloy elements of bubble‐domain propagation circuits yield magnetization profiles which are similar to those calculated on the basis of a continuum model. A quantitative comparison based upon scaling existing theoretical results for isolated elements confirms an interpretation of the data in terms of weakly interacting elements for the cases considered. The over‐all comparison adds further evidence to support a continuum model for the magnetization in the Permalloy elements.