BSO晶体的高温拉曼光谱与高温结构特征  

High Temperature Raman Spectra and Structure Character Study of BSO Crystal

作　　者：仇怀利[1] 王爱华[1] 尤静林[2] 刘晓静[1] 陈辉[2] 殷绍唐[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所,安徽合肥230031 [2]上海市钢铁冶金新技术开发应用重点实验室,上海200072

出　　处：《光谱学与光谱分析》2005年第2期222-225,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金(59832080)资助项目

摘　　要：阐述了BSO晶体在常温下的结构特征,通过测量晶体在常温下的拉曼光谱,对晶格主要振动模式进行了指认,测量晶体升温至熔化过程中不同温度下的拉曼光谱,分析研究了其微观结构在升温过程中的变化以及在高温状态下的结构特征。The structure character of BSO crystal at room temperature was generalized. The main Raman shifts of lattice vibration at room temperature were interpreted. The Raman spectra of BSO crystal were measured in a temperature range from 293 K to 1 123 K with high temperature Raman spectroscopy and time-resolved detection techniques. Temperature-dependence character of the Raman spectra of the crystal was investigated. The vibration mode of the longest bond Bi-O-(1) in crystal shifts from 542 cm(-1) to 512 cm(-1) with the temperature increasing from room temperature to 1 123 K. It can be attributed to the fact that oxygen atoms are electrostatic bond to Bi atoms. The intensity of 88 cm(-1) modes, which belongs to combination mode of bending and stretching in Bi3O4 unit, changes not so noticeably as other modes, and even the 58 cm(-1) mode of Bi atoms motions in crystal lattice decreases rapidly when the temperature is higher than 873 K, which indicates that the framework structure of the crystal is broken down at high temperature, while the Bi3O4 unit still exists.

关 键 词：BSO 晶体 常温 升温 高温 分析研究 状态 拉曼光谱 晶格 熔化过程 

分 类 号：O484[理学—固体物理] R979.1[理学—物理]