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分别测量了LaNi4 2 5Al0 .75和LaNi4 75Al0 .2 5两种合金样品在未吸氘及不同含氘量的氘化物样品的中子衍射谱 ,用Rietveld程序拟合出它们的晶体结构 ,并观察到了一些过去未曾注意的现象。LaNi4 2 5 Al0 .75在吸氘过程中 ,氘原子优先占据的原子坐标为 (0 17,0 3 2 ,0 45 )。
Neutron diffraction spectra of deuteride samples with and without deuterium absorption and different deuterium contents of LaNi4 2 5Al0.75 and LaNi4 75Al0.25 were measured respectively and their crystal structures were fitted by Rietveld program and observed To some past not noticed phenomenon. LaNi4 2 5 Al0. 75 In the deuterium absorption process, the atomic coordinates preferentially occupied by deuterium atoms are (0 17,03 2, 0 45).