title: Crystal structure of NdSi(6-z)Al(1+z)O(z)N(10-z) (z = 0.4) determined by single-crystal X-ray diffraction.
abstract: Single crystals of JEM-phase NdSi(6-z)Al(1+z)O(z)N(10-z) were successfully prepared from starting powders of Si₃N₄, AlN and Nd₂O₃ at 1700 °C for 3 h under nitrogen atmosphere. The z value of Nd-doped JEM-phase was determined to be 0.4 via determination of oxygen and nitrogen by elemental analysis. This result may be beneficial for overcoming the difficulty on preparation of single-phase JEM-phase Sialon materials and further characterization on their properties. The detailed crystal structure of Nd-Sialon was solved on the basis of single-crystal X-ray diffraction data for the first time. The space group is Pbcn (no. 60); a = 9.3060(6) Å, b = 9.7224(6) Å, c = 8.8777(5) Å; Z = 4; V = 803.22(8) Å³; D(c) = 3.971 g cm⁻³; R₁ = 0.0297 and wR₂ = 0.0739 for all reflections refined against F², with GooF value of 1.031.
authors.affiliation: School of Materials Science and Technology, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, PR China.
authors.forename: Saifang
authors.initials: S
authors.lastname: Huang
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Huang
authors.forename: Yan-gai
authors.initials: YG
authors.lastname: Liu
authors.forename: Minghao
authors.initials: M
authors.lastname: Fang