Lumped Constant and Distributed Models of Vertical Bloch Lines

The lumped constant model for vertical Bloch lines (in which a VBL is treated as a single point in the domain wall) is modified to take into account repulsive forces between VBLs and other factors, thereby making it as accurate as the conventional distributed VBL model. Simulations were performed based on the two models, for translational motion of a circular bubble with two VBL in the domain wall; the q value dependence of the skew angle, which does not appear in results for simple lumped constant models, is found in the results for the modified lumped constant model.