The magnetization reversal behavior of magnetic films in a time scale of μ s∼ms has been analyzed by thermally activated model and viscous motion. But the theoretical studies have explained that magnetization reversal in this time scale was only governed by thermal activation. So, to match the empirical processes with the theoretical model we have carried out experiment by using the magneto-optical Kerr microscope system equipped with the electromagnet which can generate the magnetic pulse of the duration of μ s∼ms range.
