CeRu_2和Ce_(15)Ru_(85)合金的X射线衍射与X射线吸收光谱研究  

X-ray Diffraction and X-ray Absorption Spectrum of CeRu_2 and Ce_(15)Ru_(85) alloys

作　　者：海鹰[1] 李英杰[1] HAl Ying;LI Ying jie(Physics and Electronic Information College,Inner Mongolia Normal University,Hohhot 010022,China)

机构地区：[1]内蒙古师范大学物理与电子信息学院,内蒙古呼和浩特010022

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2018年第6期461-464,共4页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51461035)

摘　　要：熔炼制备CeRu_2锭块和Ce_(15)Ru_(85)合金,利用高速溅射法制备非晶Ce_(15)Ru_(85)化合物样品.X射线衍射实验结果表明样品Ce_(15)Ru_(85)处非晶态,CeRu_2为Fd3m空间群MgCu_2型(C15)结构.通过X射线衍射获得多晶CeRu_2的晶格常数和原子间距.通过X射线吸收精细结构测量获得Ce K边和Ru K边X射线吸收光谱.通过对吸收光谱分析获得多晶CeRu_2和非晶Ce_(15)Ru_(85)的吸收原子Ce和Ru原子的周边原子配位情况.Melting of Ce15Ru85 and the alloys of CeRu2. Fabricate the amorphous phase of the Ce15Ru85 compound by DC high rate sputtering. X ray diffraction patterns indicated the alloy of Ce15Ru85 was in the amorphous phase. The CeRu2 compound crystallized in a single phase of MgCu2 type C15 I.aves phase structure of the Fd3m space group. We obtained the lattice parameters and inter atomic distance of CeRu2 compound by X ray diffraction. We obtained the local structure of amorphous alloy Ce15Rus： and C15 Laves phase compound CeRu2 determined from an extended X ray absorption fine structure measurements Ru K edge and Ce K edge.

关 键 词：多晶CeRu2 非晶Ce15Ru85 X射线衍射 X射线吸收精细结构 

分 类 号：O482.3[理学—固体物理]