It was concluded that the pδV contribution to formation energies was not antisymmetrical with respect to the glide plane of an edge partial dislocation, and was also significant within the core of a 60º screw partial dislocation. The vacancy migration energies varied over a wide range, with low values for the predominantly screw partial dislocation. Experimental data indicated an activation energy that was considerably lower than in a perfect crystal, and was slightly temperature-dependent. This dependence was attributed to a temperature dependence of the vacancy residence time and of the spectrum of migration energies in the core.

Self-Diffusion within the Core of a Dissociated Glide Dislocation in an FCC Solid R.G.Hoagland, A.F.Voter, S.M.Foiles: Scripta Materialia, 1998, 39[4-5], 589-96