Cu-Pt type ordering in III-V semiconductor
One of the most studied atomic ordering is CuPt type ordering in III-V semiconductor alloy in chemistry and physics. It occurs in III-V alloy when the cation planes take an alternate sequence of A-rich and B-rich plane following AxB1−xC. The resulting structure is usually called as superlattice-like structure along [1-11] or [-111] – called (111) B plane, or along [-1-1-1] or [11-1] – called (111) A plane.
Source: Wikipedia — Cu-Pt type ordering in III-V semiconductor (CC BY-SA 4.0)