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在高温高压极端条件下利用 N H4 C1 还原二氧化钼的方法合成了六方 Mo N。反应条件为:压力2 G Pa ,温度1500 ℃,时间2h 。并利用 X R D 对合成产物进行了表征。经最小二乘法拟合后结果表明,该合成产物具有六方结构对称性,其晶格常数为a = 0 .572nm , c = 0 .560nm 。经过对其衍射峰位和峰强进行拟合计算,并与实验结果进行比较, 结果表明 Mo N 产物的空间群为 P63 m mc ,其中 Mo 原子位于2 b(0 ,0 ,14) 和6 h( x,2x ,14) ,x = 0 .489 。 N 原子位于2 a(0 ,0 ,0) 和6 g(0 .5 ,0 ,0) 。所采用的方法具有反应条件易达到、反应时间短、反应产物单相性好等特点。
Hexagonal MoN was synthesized by the reduction of molybdenum dioxide with N H4 C1 under the conditions of high temperature and high pressure. The reaction conditions are: pressure 2 G Pa, temperature 1500 ℃, time 2h. The synthesized product was characterized by XRD. The fitting results of the least square method show that the synthesized product has hexagonal structure symmetry with a = 0 lattice constant. 572 nm, c = 0. 560nm. The diffraction peaks and peak intensities are fitted and compared with the experimental results. The results show that the space group of Mo N product is P63 m mc, in which the Mo atom is located at 2 b (0, 0, 14) And 6 h (x, 2x, 14), x = 0. 489. N atoms are located at 2 a (0, 0, 0) and 6 g (0.5, 0, 0). The method used has the advantages of easily accessible reaction conditions, short reaction time and good single phase reaction product.