Atomistic modelling of interaction between dislocations and misfit interface
Laboratory of Computational Engineering, Helsinki University
of Technology P.O. Box 9400, FIN-02015 HUT, Finland
Corresponding author: firstname.lastname@example.org
Accepted: 19 April 2001
Mechanisms responsible for the formation of a misfit dislocation in a lattice-mismatched system -that involve gliding of the dislocation to the misfit interface-have been studied using Molecular Dynamics simulations of a two-dimensional Lennard-Jones system. Results show clearly how the strain due to the lattice-mismatched interface acts as a driving force for dislocation migration. Moreover, we observe dislocation reactions in which the gliding planes of dislocations change such that they can migrate to the interface.
PACS: 31.15.Qg – Molecular dynamics and other numerical methods / 61.72.Lk – Linear defects: dislocations, disclinations / 68.65.-k – Low-dimensional, mesoscopic, and nanoscale systems: structure and nonelectronic properties
© EDP Sciences, 2001