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邱智华,张鲜辉,王帅华,吴少凡,林永红.Zn<sub><sup>2+</sup></sub>掺杂对共沉淀法制备Ce:Gd<sub>3</sub>Ga<sub>3</sub>Al<sub>2</sub>O<sub>12</sub>陶瓷粉体闪烁性能的影响[J].稀有金属材料与工程(英文),2020,49(3):761~768.[Qiu Zhihua,Zhang Xianhui,Wang Shuaihua,Wu Shaofan and Lin Yonghong.Effect of Zn<sub><sup>2+</sup></sub> codoping on scintillation and properties of Ce-doped Gd<sub>3</sub>Ga<sub>3</sub>Al<sub>2</sub>O<sub>12</sub> ceramic powder prepared by co-precipitation method[J].Rare Metal Materials and Engineering,2020,49(3):761~768.]
Effect of Zn<sub><sup>2+</sup></sub> codoping on scintillation and properties of Ce-doped Gd<sub>3</sub>Ga<sub>3</sub>Al<sub>2</sub>O<sub>12</sub> ceramic powder prepared by co-precipitation method
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Received:September 27, 2018  Revised:October 15, 2018
DOI:
Key words: co-precipitation method  precursors  Ce:GAGG ceramic powder  Zinc codoping
Foundation item:国家重点研发计划(No.2017YFB1104504 and 2016YFB0701004)
Author NameAffiliation
Qiu Zhihua,Zhang Xianhui,Wang Shuaihua,Wu Shaofan and Lin Yonghong  
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Abstract:
      Zinc codoping Gd3Ga3Al2O12:Ce (Ce:GAGG) ceramic precursors have been synthesized by chemical co-precipitation method. Thermal gravimetric and differential thermal analysis of the precursor powders are obtained, and phases including GdAlO3 and GAGG are generated at 883°C. The chemical molecule of precursors is analyzed by FTIR. The phases and morphology of the precursors for different calcination temperature are studied by XRD and SEM. Precursors absolutely convert to Ce:GAGG powders at 900°C. The particles calcined at 1200°C for Ce:GAGG powders with size of 20~60nm become homogeneous and smooth. The effect of PEG on the morphology of the precursors is investigated. Particle size and size range of Ce:GAGG powders calcined at different temperatures were investigated. The influence of codoping of Ce:GAGG with different Zn2+ content on photoluminescence, radioluminescence, excitation spectra and fluorescent lifetime are analyzed. The emission spectra of Ce:GAGG codoping 0.4% Zn2+ content has the highest intensity. The Zn2+ in Ce:GAGG powders has a positive effect on a fast component with short fluorescence lifetime.