Based on XRD analysis of La-Ni-Al alloys, their cell parameters and volumes were worked out, space group was determined to be P6/mmm by using powder indexing program in Cerius 2.0 code.

• 通过XRD测定了La-Ni-Al系材料的粉末衍射谱；利用计算机化学软件Cerius2.；0中的Powder lndexing程序解出了它们的晶胞参数和晶胞体积；确定了其空间群为P6/mmm。