BSO晶体生长固/液边界层结构的实时观测研究  

Structure Analysis on Growth Solid-Liquid Boundary Layer of BSOCrystal at Real Time

作　　者：仇怀利[1] 王爱华[1] 尤静林[2] 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,上海大学,上海200072

出　　处：《光谱学与光谱分析》2005年第4期529-531,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金 (59832 0 80 )资助项目

摘　　要：实时测量BSO晶体水平区熔法生长过程中,研究固/液边界层以及边界层两侧的晶体和熔体的显微拉曼光谱,晶体生长固/液边界层以及边界层两侧的熔体和晶体的结构特征,生长基元结构从熔体结构经边界层过渡到晶体结构的变化过程。结果显示,BSO熔体中存在Bi3 O4和[SiO4]的键合结构;Bi3 O4分子基团在固/液边界层聚合形成[BiO7]八面体单体、多聚体,与[SiO4]结构基团联结,在通过固/液边界层时进入格位。The micro Raman spectra of solid-liquid boundary layer, the melts and crystal side, were measured at real time, concerning BSO crystal grown with zone-melting method. The structure characters in boundary layer, melts and crystal were analyzed. The process, of which the growth unit structure changed while they transited from melts through boundary layer to crystal lattice, was analyzed. The results show that, there exists Bi-3 O-4 and [SiO4] bonding structure in the melts of BSO crystal. While in the solid-liquid boundary layer, the Bi3O4 molecular units converge into [BiO7] octahedron monomer of polymer in form, the monomer or the polymer converge with the [SiO4] structure units, then all these converged structure enter into crystal lattice sites.

关 键 词：晶体生长 边界层结构 观测研究 显微拉曼光谱 BSO晶体 生长过程 实时测量 结构特征 变化过程 晶体结构 熔体结构 生长基元 键合结构 聚合形成 分子基团 结构基团 区熔法 八面体 多聚体 格位 

分 类 号：O781[理学—晶体学] P404[天文地球—大气科学及气象学]