The structures of evaporation patterns, created by stationary and moving dislocations which terminated on the (001) surface, were studied. When the Burgers vectors of the dislocations were inclined with respect to the (001) plane, the dislocations created evaporation patterns in the form of double spirals. These spirals developed via the synergistic rotation of pairs of 0.2nm-high half-ledges which originated at the dislocation termination points. The dislocations, whose Burgers vectors lay in the (001) plane, did not form spirals when they terminated on the (001) surface, but could create kinks in the surface steps. The presence of dislocation-related kinks caused a local cusping of the surface steps.

Dislocations at Spinel Surfaces. S.V.Yanina, C.B.Carter: Surface Science, 2002, 511[1-3], 133-46