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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Crystal structure of NdSi_(6-z)Al_(1+z)O_zN _(10-z) (z = 0.4) determined by single-crystal X-ray diffraction
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Crystal structure of NdSi_(6-z)Al_(1+z)O_zN _(10-z) (z = 0.4) determined by single-crystal X-ray diffraction

机译：通过单晶X射线衍射确定的NdSi_（6-z）Al_（1 + z）O_zN _（10-z）（z = 0.4）的晶体结构

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摘要

Single crystals of JEM-phase NdSi_(6-z)Al_(1+z)O _zN_(10-z) were successfully prepared from starting powders of Si_3N_4, AlN and Nd_2O_3 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) ?, b = 9.7224(6) ?, c = 8.8777(5) ?; Z = 4; V = 803.22(8) ?~3; D_c = 3.971 g cm~(-3); R_1 = 0.0297 and wR_2 = 0.0739 for all reflections refined against F ~2, with GooF value of 1.031.
机译：在氮气气氛下，从Si_3N_4，AlN和Nd_2O_3的起始粉末在1700°C的温度下成功制备了JEM相NdSi_（6-z）Al_（1 + z）O _zN_（10-z）单晶。通过元素分析测定氧和氮，将Nd掺杂的JEM相的z值确定为0.4。该结果可能有益于克服制备单相JEM相Sialon材料的困难以及进一步表征其性能。首次根据单晶X射线衍射数据解析了Nd-Sialon的详细晶体结构。空间群是Pbcn（第60号）; a = 9.3060（6）α，b = 9.7224（6）α，c = 8.8777（5）α; Z = 4; V = 803.22（8）α〜3; D_c = 3.971 g cm〜（-3）;对于F〜2精炼的所有反射，R_1 = 0.0297和wR_2 = 0.0739，GooF值为1.031。

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