期刊
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
卷 61, 期 1, 页码 301-305出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNS.2013.2286108
关键词
Ce doped; co-precipitation; GAGG Scintillator; nanopowder
资金
- National Natural Science Foundation of China [51201175]
- China Postdoctoral Science Foundation [2011M501030, 2013T60609]
- Zhejiang Provincial Public Welfare Technology Program [2012C21109]
Cerium doped gadolinium gallium aluminum oxide (GAGG:Ce) nanopowders were prepared by a co-precipitation method with different cation concentrations of the mother salt solution, followed by calcination at different temperatures. The influence of cation concentrations (0.1, 0.2, 0.3, 0.4, 0.5, and 0.6 mol/L) in the mother salt solution on GAGG:Ce nanopowders was investigated by thermal gravity-differential thermal analysis (TG-DTA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (IR), scanning electron microscopy (SEM), and photoluminescence spectroscopy (PL). The GAGG phase was formed after calcining at 950 degree C for 2 h for all samples. The primary particle sizes of powder calcined at the same temperature decrease with the increase of cation concentration, which is suggested by the analysis of SEM and specific surface area measurement. However, the nonuniformity of particle size was observed for samples prepared using the salt solutions with cation concentrations > 0.3 mol/L, especially for the 0.6 mol/L sample. The photoluminescence spectrum intensity indicates that the 0.2 mol/L and 0.3 mol/L samples have higher degree of crystal perfection than others. Considering all the factors above, samples synthesized by using salt solution with 0.3 mol/L cation concentration were chosen for ceramic scintillators preparation in our future work.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据