The phase separation of alloys around the lines of edge-type and screw-type dislocations was studied by using a continuum model. The dependence, upon composition, of the lattice constant, bulk modulus and shear modulus was shown to determine the distribution of alloy components in the stress fields of the dislocations. Numerical simulation results were also presented for isolated dislocation lines, dislocation arrays and random distributions of dislocations in bulk mixtures. The effects of dislocations upon phase separation which occurred at the surfaces of growing films were also considered. This indicated that misfit dislocations could create a compositionally patterned layer. The equilibrium positions of misfit dislocations were also calculated for compositionally modulated overlayers, and it was shown that the critical thickness for the introduction of dislocations was reduced by compositional modulation.

Spinodal Decomposition and Dislocation Lines in Thin Films and Bulk Materials. F.Léonard, R.C.Desai: Physical Review B, 1998, 58[13], 8277-88