Rietveld refinement of the A3B (D019) and A2B (B82) phases in Ti-Sn and Ti-Ga alloys

► The shift of Ti atoms related 6(h) positions has been calculated in D019 phases. ► The shift has been attributed to presence of symmetry elements in the space group. ► Both the Ti3Sn and Ti3Ga phases exhibit atomic shift in opposite direction.