Abstract
Suppression of hysteresis losses by an external field gradient is described quantitatively and compared with a recent experiment. By fitting the theoretical curves to the experimental data conclusions are drawn on the distribution and shape of the energy-wells (microdefects) responsible for the hysteresis of the domain wall motion. The microdefects are shown to give rise to localized wall-pinning points, spaced a few micrometers from each other in the investigated LPE garnet film.
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