MMTN晶体与MMTWD晶体的晶格振动及热导率的拉曼光谱研究  

Raman Spectra Study on Lattice Vibration and Thermal Conductivity of MMTN and MMTWD Crystals

作　　者：杨云[1] 孙为[1] 张鹏[1] 周雪飞[1] 邱贝贝[1] 孔垂岗[1] 卢贵武[1] 

机构地区：[1]中国石油大学(北京)理学院,北京102249

出　　处：《人工晶体学报》2013年第5期933-937,共5页Journal of Synthetic Crystals

基　　金：教育部科学技术研究重点项目(108023)

摘　　要：采用拉曼光谱技术测量了MMTN(MnHg(SCN)4(C2H5NO)2)和MMTWD(MnHg(SCN)4(H2O)2(C3H7NO)2)两类金属有机配合物晶体的拉曼光谱,并对其晶格振动特征峰进行了指认。依据晶格动力学理论以及声子散射模型,推导了晶体热导率与声子寿命及拉曼谱线半峰宽的关系,计算了晶体的热导率,讨论了该类晶体激光损伤的物理机制。The Raman spectroscopy technology has used to measure the Raman spectrum of two types of organometallic nonlinear optical crystal,MMTN(MnHg(SCN)4(C2H5NO)2) and MMTWD(MnHg(SCN)4(H2O)2(C3H7NO)2),and the lattice vibration characteristic modes have been designed.Based on the Lattice dynamics theory and phonon scattering model,the relation between the thermal conductivity and the half peak width of Raman spectrum was deduced.The thermal conductivity of this family crystals was calculated,from which the laser damage physical mechanism was discussed.

关 键 词：MMTN晶体 MMTWD晶体 热导率 拉曼光谱 晶格振动 激光损伤阈值 

分 类 号：O782[理学—晶体学]