Abstract
alloy films using the magneto-optical Kerrmicroscope capable of the direct observation of time-resolved domain patterns. Interestingly enough, as the sample thickness increasesthe magnetization reversal behavior becomes changed from a single domain wall motion to the random nucleations of domains. Also,from the stochastic analysis of the domain jump sizes during the domain wall motion, it was found that the magnetization reversalbehavior in the samples shows the critical scaling behavior with the critical exponent of τ~1.33.Keywords: magnetization reversal, domain wall dynamics, critical scaling behavior, ferromagnetic film
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