LaNi5及其氢化物的结构优化
Structure Optimization of LaNi5 and Its Hydride
张秀兰1, 孔海涛2
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作者单位:1. 淮南师范学院 物理与电子信息系, 安徽 淮南 232038; 2. 常州信息职业技术学院, 江苏 常州 213164
中文关键字:LaNi5; 密度泛函理论; 热力学
英文关键字:LaNi5; density functional theory (DFT); thermodynamics
中文摘要:基于密度泛函理论,优化了LaNi5及其氢化物LaNi5Hn(n=1,2,3,4,5)晶体的能量、体积以及原子坐标,并把优化得到的结果与目前已经取得的一些结果进行比较分析。结果显示,随晶胞贮氢量的增加,三个晶胞参数a、b、c和γ角的值都显著增加,且每增加一个氢原子,晶体的密度都略有减小。
英文摘要:Based on the density functional theory (DFT), the energy, volume and the atom coordinate of LaNi5 and its hydride LaNi5Hn(n=1, 2, 3, 4, 5) were optimized. The got results were compared with others. The results show that the parameter a, b, c and γ increase with the increase of hydrogen storage. At the same time, the density of crystal reduces a little bit.