This causes the transfer of Dy particles from magnetic material on to the apex of the tip. The width of the domain wall is calculated as where  is exchange stiffness. The magnetic contrast is enhanced due to the presence of electronic states that are not occupied in the cluster of Dy atoms present on the apex of the tip.
This leads to the transfer of Dy particles from magnetic material onto the summit of the tip. The width of the domain wall is computed as where  is exchange stiffness. The magnetic distinction is amplified due to the presence of electronic states that are not occupied in the cluster of Dy atoms present on the apex of the tip.