Abstract
We present a systematic change of the magnetic domain structure with temperature in epitaxial ferromagnetic MnAs film on GaAs (0 0 1), observed in a wide temperature range of 15–45 °C by magnetic force microscopy. Interestingly, it is found that, as temperature increases, the domain structure within the ferromagnetic α-MnAs stripes shows a mixture of head-on and simple domains at 15 °C and then, takes a complete transition to simple ones above 15 °C. This change could be understood by change in the demagnetizing factor of the cross-section of the ferromagnetic stripes with temperature.
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