Investigation on Raman spectra and thermal properties of LuVO_4 and Nd:LuVO_4 crystals  

作　　者：徐民 于浩海 张怀金 许心光 王继扬 

机构地区：[1]State Key Laboratory of Crystal Materials,Shandong University

出　　处：《Journal of Rare Earths》2011年第3期207-212,共6页稀土学报（英文版）

基　　金：supported by the State Key Research Development Program of China(2010CB833103);National Natural Science Foundation of China(50721002)

摘　　要：Lattice vibration modes of LuVO4 and Nd：LuVO4 crystals were calculated by using space group theory,and polarized Raman spectra were recorded with four different geometrical scattering configurations at room temperature to test the theoretical prediction and assign the normal vibrations of these crystals.The measured specific heats at 293.15 K were 0.368,0.378 and 0.363 J/（g·K） for LuVO4,2 at.% and 3 at.% Nd：LuVO4,respectively.The thermal diffusivities of Nd：LuVO4 crystals were obtained in the temperature range of 303.15-563.15 K.The calculated thermal conductivity was 5.149（4.579） W/（m·K） along the [001]（[100]） direction for 2 at.% Nd：LuVO4 at 303.15 K,and 5.059（4.225） W/（m·K） for 3 at.% Nd：LuVO4.Lattice vibration modes of LuVO4 and Nd：LuVO4 crystals were calculated by using space group theory,and polarized Raman spectra were recorded with four different geometrical scattering configurations at room temperature to test the theoretical prediction and assign the normal vibrations of these crystals.The measured specific heats at 293.15 K were 0.368,0.378 and 0.363 J/（g·K） for LuVO4,2 at.% and 3 at.% Nd：LuVO4,respectively.The thermal diffusivities of Nd：LuVO4 crystals were obtained in the temperature range of 303.15-563.15 K.The calculated thermal conductivity was 5.149（4.579） W/（m·K） along the [001]（[100]） direction for 2 at.% Nd：LuVO4 at 303.15 K,and 5.059（4.225） W/（m·K） for 3 at.% Nd：LuVO4.

关 键 词：lattice vibration Raman spectrum thermal analysis rare earths 

分 类 号：TG146.45[一般工业技术—材料科学与工程]