Abnormal Alignment of Misfit Dislocations inIn_0.52Al_0.48As/In_xGa_1-xAs/In_0.52AI_0.48As/InP Heterostructure

It was observed with transmission electron microscopy in the In_0.52Al_0.48As/In_xGa_1-xAs/In_0.52AI_0.48As/InP heterostructure that misfit dislocation lines deviate from the <110> directions at a certain angle depending on the indium content x. Such an abnormal alignment of misfit dislocations is explained in terms of an alloy effect on the formation of single jogs on the misfit dislocations in the interface between the III-V ternary compounds.