BSO晶体生长固/液边界层结构的实时观测研究

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Bi₃O₄和[SiO₄]的键合结构; Bi₃O₄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。

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

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 3O 4 and bonding structure in the melts of BSO crystal.While in the solid-liquid boundary layer, the Bi 3O 4 molecular units converge into octahedron monomer of polymer in form,the monomer or the polymer converge with the structure units, then all these converged structure enter into crystal lattice sites.