不同结构形态的NdOHCO_3中Nd^(3+)的增强电子拉曼光谱研究  

Investigation of Enhanced Electronic Raman Spectra of Different Morphologic Neodymium Hydroxide Carbonate

作　　者：王家君[1] 徐怡庄[2] 周勇[3] 熊柏青[1] 康志君[1] 崔舜[1] 赵莹[3] 周增林[1] 王笃金[3] 吴瑾光[2] 徐端夫[3] 

机构地区：[1]北京有色金属研究总院国家有色金属及电子材料分析测试中心,北京100088 [2]北京大学稀土材料化学及应用国家重点实验室,北京100871 [3]中国科学院化学研究所,北京100080

出　　处：《中国稀土学报》2004年第6期734-738,共5页Journal of the Chinese Society of Rare Earths

摘　　要：利用X射线粉末衍射、场发射电子扫描显微术和透射电子显微术TEM,对不同方法制备的形态、颗粒大小不同的NdOHCO3进行钕离子的增强电子拉曼光谱和FT IR光谱研究,发现结构形态不同的NdOHCO3由于配位环境变化,导致钕离子的电子拉曼光谱在2600～1600cm-1附近拉曼谱带的峰形、峰位和峰的数目产生显著变化。NdOHCO_3 particles with different sizes and morphologies were prepared by methods of thermal decomposition of urea under microwave irradiation with and without polystyrene sodium sulfonate and conventional reflux condition. The neodymium hydroxide carbonate samples were investigated by FT-Raman spectroscopy, X-ray diffraction, TEM, electron diffraction, as well as FT-IR spectroscopy. Observable changes in electronic Raman bands were found among the enhanced electronic Raman spectra of NdOHCO_3 particles with different particle size and morphology. The results suggest that the change of the size and morphology of NdOHCO_3 particles brings about subtle variation on the coordination environment around the neodymium ions.

关 键 词：电子拉曼光谱 NdOHCO3 X射线衍射 TEM 稀土 

分 类 号：O43[机械工程—光学工程]