Long-range order in InAsSb

For the first time, {111} ordering (CuPt type) has been observed in InAs1−xSbx alloys in a wide compositional range from x=0.22 to 0.88. The order-induced spots show the highest intensity for x≊0.5 samples and the lowest intensity toward each binary end compound. Only two of the four variants are formed during growth. In some areas the degree of order for these two variants is equal, and in other areas one variant dominates.