The magnetic aftereffect in 180 degree magnetically bowed Bloch walls

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Abstract
A domain wall in an iron whisker is held in a stationary position as carbon atoms redistribute on interstitial sites. The wall is then moved back and forth from one side to the other of the rest position of the wall before the carbon atoms can follow. As the magnetostatic self energy gives rise to a bowed wall it is necessary to determine the dependence of wall displacement on positions along the whisker by considering the demagnetizing fields, the applied field and the stabilization fields from the interaction of the wall with the carbon distribution. Calculations of wall displacement along the whisker with applied field are carried out for various forms for the potential well. Comparison with experiment leads to the conclusion that the potential well is much narrower than would be expected in the usual treatment of magnetic aftereffect.