KDP晶格振动模和生长机制的拉曼光谱研究(英文)  

Lattice Vibration Modes and Growth Mechanism of KDP Single Crystals Studied by Raman Spectroscopy

作　　者：卢贵武[1] 夏海瑞[2] 关继腾[1] 张世奇[3] 陈勇[3] 周瑶琪[3] 

机构地区：[1]石油大学应用物理系,东营257062 [2]山东大学物理系,济南250100 [3]石油大学资源系,东营257062

出　　处：《光散射学报》2002年第1期27-33,共7页The Journal of Light Scattering

摘　　要：用空间群理论分析和指认了KDP晶体的拉曼活性晶格振动模 ,测量了晶体以及生长溶液的拉曼光谱 ,重点分析了出现在固 /液界面附近的 91 6cm- 1拉曼峰 ,该峰被指认为扭曲的P(OH) 2 集团反对称伸缩振动。依据本文的理论分析和实验测量 ,我们认为H2 PO- 4阴离子集团的二聚物可能是KDP晶体的生长基元。The space group theoretical analyses and assignment of the lattice modes of KDP crystal have been made, and the Raman spectra of their growth solution have been observed in different growth regions The attention is focused on the analysis of the 916cm -1 band arising from the H 2PO 4- anions in the interface between the KDP crystals and their growth solution This has been assigned to the asymmetrical stretching mode of the deformation P(OH) 2 From these results, the growth unit of KDP crystal has been concluded to be the dimers of H 2PO 4- anions

关 键 词：拉曼光谱 拉曼散射 KDF晶体 晶格振动模 空间 生长机制 

分 类 号：O733[理学—晶体学] O734