High-resolution electron microscopy was used to characterize the dislocations which had been introduced by Ar-ion milling. The core structures of 30º and 90º partial dislocations, which resulted from the dissociation of 60º dislocations, were analyzed. It was found that various structural models (glide and shuffle sets) could be differentiated. Chemical information concerning the dislocations could be deduced by determining the Burgers vectors of the dislocations, as well as the crystal polarity. For a 60º dislocation which was associated with an intrinsic stacking fault, the 30º partial was the glide set; regardless of its chemical nature. No shuffle set was found. For a 60º dislocation which had dissociated to give an extrinsic stacking fault, the 90º partial was usually kinked and more difficult to recognize. In one particular case, it was found to be the glide set.

P.Lu, D.J.Smith: Philosophical Magazine B, 1990, 62[4], 435-50