Static Properties of Single- and Double-Vortex
Domain Walls in Surface-Anisotropic Films

V. I. Beresnev, B. N. Filippov, and L. G. Korzunin

Institute of Metal Physics, Ural Division, Russian Academy of Sciences,
ul. Kovalevskoi 18, Ekaterinburg, 620219 Russia

Received March 11, 1997

Abstract—The static properties of single- and double-vortex Bloch-type domain walls in surface-anisotropic
films are examined. It is shown that, given surface anisotropy, a certain film thickness, and a certain anisotropy
constant, either a single-vortex or a double-vortex symmetric Bloch-type domain wall can be a stable configu-
ration. The transition of a single-vortex to a double-vortex wall is investigated as a function of material param-
eters. Critical surface anisotropy constants are calculated for which a change in film thickness can cause the
transition of a double-vortex to a single-vortex domain wall only.

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