MAGNETIZATION PROCESSES IN MAGNETIC MICROWIRES

Yurij Kostyk – Rastislav Varga – Manuel Vazquez – Pavol Vojtanik

   We have studied the domain wall dynamics in glass-coated magnetic microwires. Three different regimes were found. Firstly, the domain wall is pinned at the field lower then the dynamic coercivity and no propagation is observed. Secondly, the domain wall propagates in the series of intermittent jumps in the adiabatic regime as a result of its interaction with the defects presented in the sample. Finally, above the treshold field, the domain wall does not become pinned locally and its motion is characterized by the constant velocity , which is linearly dependent on the applied magnetic field.

Keywords: magnetization process, Barkhausen jump, magnetic microwire

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