AlF_3基氟化物玻璃中Eu^(3+)的光谱性质与局域结构的关系  

Relationship between Spectral Properties and Local Structure of Eu^(3+) in AlF_3-based Fluoride Glasses

作　　者：吴长锋[1] 秦伟平[1] 陈宝玖[1] 秦冠仕[1] 赵丹[1] 刘晃清[1] 黄世华[1] 

机构地区：[1]中国科学院激发态物理开放研究实验室

出　　处：《发光学报》2001年第4期393-396,共4页Chinese Journal of Luminescence

基　　金：国家重点基础研究发展规划(973稀土G1998061309);中国科学院重点基金;国家自然科学基金(59872042)资助项目

摘　　要：报导了 ＥＵ３＋掺杂 ＡｌＦ３基氟化物玻璃材料的制备及其光谱性质与局域结构的关系。声子边带谱表明 与稀土离子的电子跃迁相耦合的声子模式为 Ａｌ－Ｆ的伸缩振动模，结合１５１Ｅｕ的 Ｍｏｓｓｂａｕｅｒ谱，进一步确认了 ＥＵ３＋在该玻璃基质中的配位状态。由发射光谱，根据ＡｌＦ３晶体所属空间群中等效点系的对称性分析，通过 对称性破缺可以推测Ｅｕ３＋在该玻璃体系中占据的格位主要为Ｇｉ和Ｓ６。The relationship between spectral properties and local structure of Eu3 + in AlF3-based fluoride glasses was studied. The phonon sideband was measured in order to get the information about the phonon mode coupled to the rare-earth ions. Moreover, the coordination states was discussed from the isomer shift of 151Eu3+ ions in ABCE glass. According to the emission spectra and the analysis of symmetrically equiva- lent points in space group, it is inferred by symmetry breaking that the Eu3+ ions in ABCE glass must be mainly located at the S6 and Ci site symmetry.

关 键 词：氟化物玻璃 光谱性质 局域结构 ALF3 三氟化铝 EU^3+ 铕离子掺杂 

分 类 号：TQ171.716[化学工程—玻璃工业]