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Figure 5
(a) A schematic image of a prismatic vacancy-type SDL, where b is the Burgers vector, D is the loop diameter, the `T's indicate edge dislocation and the polar coordinates follow the notation of Kroupa (1960BB54). Open squares indicate vacancies, vertical black lines indicate lattice planes, and the light-red and light-blue areas show the volume and the affected regions of the loop, respectively. (b) The displacement field of a vacancy-type prismatic SDL of 20b diameter, D = 20b, at different heights, z/D, from the plane of the loop. (c) The trace of the strain tensor, [{\rm Tr} \,{\underline {\underline {\boldvarepsilon}}}], of vacancy-type prismatic SDLs of three different diameters: D = 4b (red line), 20b (dashed blue line) and 60b (dashed–dotted green line). Both the displacements and the [{\rm Tr}\, {\underline {\underline {\boldvarepsilon}}}] values were calculated using the equations of Kroupa (1960BB54) with Poisson's number for Zr (Weck et al., 2015BB97).

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 54| Part 3| June 2021| Pages 803-821
https://doi.org/10.1107/S1600576721002673
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