Structural characterization of Nd-doped in silica host matrix prepared by wet chemical process  

作　　者：Surender Duhan Sunita Devi M.Singh 

机构地区：[1]Materials Science Lab, Department of Applied Physics, Guru Jambheshwar University of Science & Technology [2]Materials Science Lab, Department of Physics [3]Department of Chemistry Lajpat Rai College [4]Department of Physics, Amity School of Engineering and Technology,Amity University Sec-125

出　　处：《Journal of Rare Earths》2009年第1期83-86,共4页稀土学报（英文版）

摘　　要：Silica host matrix containing neodymium which is potentially important for the formation of nanocrystalline metal oxides was prepared by solgel method, using tetra-ethoxysilane and Nd（NO3）3 as precursor materials.The prepared samples were changed from amorphous to nanocrystallites phase at sintered temperature 550 °C（4 h）, 750 °C（8 h） and 950 °C（12 h）.The thermally treated sample microstructures were investigated using X-ray diffraction（XRD）, Fourier transformation infrared spectroscopy（FTIR）, and scanning electron mi-croscopy（SEM）.While a further increase of the temperature at 750 °C and annealing time（8 h） resulted in the formation of cubic and hexagonal Nd2O3 nanocrystallites.At constant sintering temperature 950 °C for 12 h, the samples showed sharper and intense peaks.The sizes of Nd2O3 nanocrystallites were characterized by XRD with average size ～46 nm.Silica host matrix containing neodymium which is potentially important for the formation of nanocrystalline metal oxides was prepared by solgel method, using tetra-ethoxysilane and Nd（NO3）3 as precursor materials.The prepared samples were changed from amorphous to nanocrystallites phase at sintered temperature 550 °C（4 h）, 750 °C（8 h） and 950 °C（12 h）.The thermally treated sample microstructures were investigated using X-ray diffraction（XRD）, Fourier transformation infrared spectroscopy（FTIR）, and scanning electron mi-croscopy（SEM）.While a further increase of the temperature at 750 °C and annealing time（8 h） resulted in the formation of cubic and hexagonal Nd2O3 nanocrystallites.At constant sintering temperature 950 °C for 12 h, the samples showed sharper and intense peaks.The sizes of Nd2O3 nanocrystallites were characterized by XRD with average size ～46 nm.

关 键 词：rare earth oxide SILICA annealing/calcination NANOCRYSTALLITES 

分 类 号：TG146.4[一般工业技术—材料科学与工程]