The influence of the speed of the switching process on the nonequilibrium domain structures in magnetic thin-film elements undergoing large angle rotations was studied with time-resolved scanning Kerr microscopy and numerical modelings. In particular, the systematic evolution of the spatiotemporal nature of the reversal of a small Ni80Fe20element to progressively faster switching fields has been investigated. Generally, the magnetization evolves into a complex domain structure in nonequilibrium state when a magnetic element is excited by applying a short magnetic field pulse. The degree of complexity of the nonequilibrium domain structure is found to be a strong function of the speed of the switching process
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Choi et al. (2006) studied this question.
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