PbMoO4晶体生长基元和生长习性的高温拉曼光谱研究  

Study of growth units and the growth habit of PbMoO_4 crystal using high temperature Raman spectra

作　　者：周文平[1] 万松明[1] 张霞[1] 张庆礼[1] 孙敦陆[1] 仇怀利[1] 尤静林[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,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：《物理学报》2008年第11期7305-7309,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：应用高温拉曼光谱研究了PbMoO4熔体中的生长基元.通过对不同温度下PbMoO4晶体拉曼光谱和熔点温度附近熔体高温拉曼光谱的研究,发现PbMoO4熔体中存在Pb2+阳离子和[MoO4]2-阴离子生长基元.进一步讨论了PbMoO4晶体生长基元和各个低指数晶面间的相互作用,解释了晶体的生长习性和枝晶生长的原因,并指出:PbMoO4晶体生长的最佳籽晶取向是平行于其{101}面所围成的棱锥表面的方向.High temperature Raman spectroscopy has been used to probe the growth units existing in PbMoO4 melt. According to the Raman spectra of PbMoO4 crystal at various temperatures and the melt just above the crystal melting point, we found that Pb2^＋ cations and [ MoO4 ]^2- groups acting as the growth units exist in the melt. Further, we have studied the interaction between the growth units and various low-index planes of PbMoO4 crystal. The crystal growth habit and the cause of dendrite growth are explained. Finally, we point out that the best seed orientations for the crystal growth are parallel to its {101} planes.

关 键 词：钼酸铅晶体 枝晶 籽晶取向 拉曼光谱 

分 类 号：O781[理学—晶体学]