A displacement and strain analysis was made of an edge dislocation core in gold. The displacement and strain field around the edge dislocation were mapped by geometrical phase analysis of high-resolution transmission electron microscopic images. The displacement and strain measurement results were compared with the isotropic elastic theory dislocation model, the anisotropic elastic theory dislocation model, the Peierls–Nabarro dislocation model and the Foreman dislocation model (a = 4). These comparisons showed that the Peierls–Nabarro model was the most appropriate theoretical model to describe the deformation fields of the dislocation core.

Experimental Examination of Displacement and Strain Fields in an Edge Dislocation Core. C.W.Zhao, Y.M.Xing, C.E.Zhou, P.C.Bai: Acta Materialia, 2008, 56[11], 2570-5