Atomistic modelling of interaction between dislocations and misfit interface

Mechanisms responsible for the formation of misfit dislocation in lattice-m ismatched system that involve gliding of the dislocation to the misfit inte rface have been studied using Molecular Dynamics simulations of two-dimensi onal Lennard-Jones system. Results show clearly how the strain due to the l attice-mismatched interface acts as a driving force for dislocation migrati on. Moreover, we observe dislocation reactions in which the gliding planes of dislocations change such that they can migrate to the interface.