Cr^(4+)∶Ca_2GeO_4多晶料的合成与表征  

Synthesis and Characterization of Cr^(4+)∶Ca_2GeO_4 Polycrystalline Materials

作　　者：张山丽[1] 曾繁明[1] 李春[1] 刘景和[1] 

机构地区：[1]长春理工大学材料科学与工程学院,长春130022

出　　处：《人工晶体学报》2010年第5期1196-1200,1210,共6页Journal of Synthetic Crystals

摘　　要：采用固相法合成Cr4+∶Ca2GeO4晶体原料,通过XRD分析确定了合成Cr4+∶Ca2GeO4多晶料的最佳温度,计算了Cr4+∶Ca2GeO4多晶料的晶格参数。XPS和荧光光谱分析表明多晶料中含有Cr4+。Cr4+∶Ca2GeO4多晶料具有宽的室温荧光光谱,光谱范围为1000~1600 nm,最强荧光发射峰位于1257 nm,这是Cr4+的3T2→3A2能级跃迁导致的荧光发射。Cr^4＋∶Ca2GeO4 polycrystalline materials were synthesized by solid state method.The optimum synthesis temperature of Cr^4＋∶Ca2GeO4 polycrystalline materials were determined by XRD analysis,and crystal lattice parameters of the Cr^4＋∶Ca2GeO4 polycrystalline material were caculated.XPS analysis showed that the powders contain Cr^4＋,which has also been proved by fluorescence spectroscopy.The range of brand fluorescence spectroscopy of Cr^4＋∶Ca2GeO4 powder at room temperature is 1000-1600 nm,The single band with a maximum at 1257 nm in the room-temperature emission spectrum is attributed to 3T2→3A2 energy level transition of Cr^4＋.

关 键 词：Cr^4+∶Ca2GeO4多晶料 固相法 光谱分析 

分 类 号：O78[理学—晶体学]