Vortex stability range as a function of the angle between the applied field and the ring long axis for the ring with axis.
Schematic of domain-wall configurations observed in magnetic rings (a) vortex type, (b) transverse wall, corresponding experimental images (c) and (d) calculated by solving the TIE equation and differentiating the phase along the direction perpendicular to the white arrows to give and induction maps. Induction maps produced by LLG simulations are included for comparison [(e) and (f)].
Phase diagram for domain-wall type as a function of ring dimensions. Hollow symbols represent the simulated images for rings of and diameter, while solid points indicate the experimental results.
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