Figure 1
From: Effect of solute atoms on dislocation motion in Mg: An electronic structure perspective
Construction of dislocation core structure of hcp crystals.
(a) A unit cell of hcp structure with basal and prismatic plane identified. (b) Periodic array of dislocation dipoles. (c) Strain fields of εxz and εyz calculated by the elastic theory in a periodic cell. (d) Displacement field of uz component obtained by the path integration of strain field along x and y. (e) The differential displacements map of dislocation core predicted by the elasticity theory described in the text. (f) Same as e, but map of the relaxed dislocation core by DFT. (g) Schematic image of dislocation moving along to the 〈0001〉 direction.
