无机材料学报 ›› 2016, Vol. 31 ›› Issue (10): 1151-1156.DOI: 10.15541/jim20160075

• • 上一篇    

共沉淀法制备Ce掺杂的Gd3(Al, Ga)5O12粉体

张 烨1, 陈先强1,2, 秦海明1, 罗朝华1, 蒋 俊1, 江浩川1   

  1. (1. 中国科学院 宁波材料技术与工程研究所, 宁波315201; 2. 中国科学院大学, 北京100039)
  • 收稿日期:2016-02-01 出版日期:2016-10-20 网络出版日期:2016-09-23
  • 作者简介:张 烨. E-mail: zhangye@nimte.ac.cn

Fabrication of Ce-doped Gd3(Al, Ga)5O12 Powders Using Co-precipitation Method

ZHANG Ye1, CHEN Xian-Qiang1,2, QIN Hai-Ming1, LUO Zhao-Hua1, JIANG Jun1, JIANG Hao-Chuan1   

  1. (1. Ningbo Institution of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; 2. University of Chinese Academy of Sciences, Beijing 100039, China)
  • Received:2016-02-01 Published:2016-10-20 Online:2016-09-23
  • About author:ZHANG Ye(1987–), female, engineer. E-mail: zhangye@nimte.ac.cn
  • Supported by:
    National Natural Science Foundation of China (51502308, 51402317, 11404351);Ningbo Science and Technology Innovation Team (2014B82004)

摘要:

通过在含有钆、镓、铝离子的硝酸混合溶液中滴加氨水, 共沉淀生成Ce掺杂的Gd3(Al,Ga)5O12(GAGG)前驱体, 并采用TG/DTA对GAGG前驱体进行表征。分别在800℃、850℃、900℃、1000℃、1100℃及1200℃对GAGG前驱体进行煅烧处理, 采用XRD对GAGG粉体的物相进行表征, 结果显示制备出纯相的GAGG粉体。采用SEM对GAGG粉体的颗粒大小以及微观形貌进行观察。GAGG粉体的荧光谱图显示在560 nm处有一个很强的发射峰。在900℃煅烧处理的GAGG粉体所烧结的陶瓷具有最高的透明度。

关键词: Gd3(Al,Ga)5O12陶瓷, 共沉淀, 煅烧, 无机闪烁体

Abstract:

Ce-doped Gd3(Al,Ga)5O12 (GAGG) precursors were co-precipitated from a mixed solution of gadolinium, aluminum and gallium nitrates using ammonium hydroxide as precipitant. and then characterized by TG/DTA analysis. GAGG powders were obtained by calcining the precursors at 800℃, 850℃, 900℃, 1000℃, 1100℃ and 1200℃. Phase evolution of GAGG powders were investigated by XRD analysis which showed that a pure GAGG phase was obtained. SEM observation demonstrated that the obtaimed poovders were mainly amorphous with size mainly about 100-150 nm in diameter. PL spectra of GAGG powders showed strong emission around 560 nm. The highest transparency of as prepared ceramic was obtained when GAGG powders were calcined at 900℃.

Key words: Gd3(Al,Ga)5O12 ceramic, co-precipitation, calcination, inorganic scintillator

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