Abstract
It is shown by theoretical analysis that domain walls can support two different types of denoted as interface waves and displacement The magnetostatic interface are similar in character to magnetostatic surface waves. The wall displacement are analogous to displacement on strings and to capillary on the surface of liquids, Dispersion relations are derived for both types of waves. The displacement are approximately dispersion free at high wavenumbers. At low wavenumbers their dispersion diagram reflects the incipient instability of the straight domain wall against sinusoidal displacement, which occurs as the field gradient is reduced.
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