Static and kinematic parameters of magnetic bubble walls having a horizontal Bloch line pair

Abstract

The micromagnetic model previously reported has been applied to a selection of materials and to an additional wall type. The stability of unichiral (S=1) walls and walls containing a single horizontal Bloch line pair (HBLP) has been studied numerically for Q in the range 1.4 to 4.6, and for material lengths, normalized to film thickness, between 0.05775 and 0.462. Wall structure, in the form of contour maps and profiles of azimuthal angle, have been obtained for walls without and with a 2π twist (HBLP) centered on the film midplane. The dependence of structural quantities on material parameters is also presented. Bubble mobility dependence on quasi-static wall structure was investigated from the point of view of the gyrovector force density concept. The dependence of the peak magnitude of the gyrovector on material length is discussed, and a relief map of the gyrovector magnitude for a wall containing an HBLP is presented.