Zn1−xCdx polytype single crystals with various degree of order

The results of X-ray investigations of the polytype structures formed in solid solutions of Zn_1–xCd_xSe are presented. For compositions of 0.22 < x < 0.35 polytypes 8H, 6H, 4H, and DS (disordered structure) are present. The Zn_1–xCd_xS single crystals of 0 ≦ x ≦ 0 were obtained by Bridgman's method under high protective argon pressure from the melt. The structures are characterised by FARKASZ -JAHNKE statistical parameters π(m,p), and by parameters P_LH of the polytype unit cell formation probability.