LiB3O5晶体高温拉曼光谱研究  

High temperature Raman spectra and micro-structure of LiB_3O_5 crystal and its melt

作　　者：张霞[1,2] 万松明[2] 殷绍唐[2] 尤静林[3] 张荣波[1] 

机构地区：[1]盐城工学院材料学院,盐城224003 [2]中国科学院安徽光学精密机械研究所,合肥230031 [3]上海市钢铁冶金新技术开发应用重点实验室,上海大学,上海200072

出　　处：《物理学报》2009年第1期373-377,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:50472104)资助的课题~~

摘　　要：研究了LiB3O5晶体在不同温度下(在300—1173K的温度范围)的拉曼光谱,分析了LBO晶体结构随温度变化的规律.随着温度的升高,LBO晶体的拉曼光谱谱峰都不同程度地向低波数方向移动,也存在不同程度的展宽,同时强度减弱.发现晶体在1100K存在明显相变,与LBO晶体的相图给出的1107K的相变温度基本相符.The High temperature Raman spectra of LBO crystal and melt were studied.The rule of structure change of BGO crystal with increasing temperature was analyzed.The results show that the peaks of spectra move to the lower wavelength and broaden in different degrees.The intensities of spectra peaks decrease,too.In addition,the phase transformation of LBO crystal was studied by using high temperature Raman spectra as well.There is an apparent phase transformation of LBO at 1100K.

关 键 词：LiB3O5晶体 高温拉曼光谱 相变 

分 类 号：O731[理学—晶体学]