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Synthesis of (Y,Gd)2O3:Eu nanopowder by a novel co-precipitation processing

Published online by Cambridge University Press:  01 December 2004

Jiyang Chen ,
Ying Shi  and
Jianlin Shi
Jiyang Chen
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, People’s Republic of China
Ying Shi*
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, People’s Republic of China
Jianlin Shi
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, People’s Republic of China
*
a) Address all correspondence to this author. e-mail: yshi@mail.sic.ac.cn
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Abstract

Nano-sized (Y,Gd)2O3:Eu powders were synthesized by a novel co-precipitation processing in which a mixture of ammonium hydroxide and ammonium hydrogen carbonate was adopted as a complex precipitant. Evolution behaviors of precursors during calcinations were studied by means of thermogravimetry-differential scanning calorimetry-mass spectrum, Fourier transform infrared, x-ray diffraction, scanning electron microscopy, and transmission electron microscopy in detail. Nano-sized (Y,Gd)2O3:Eu powder as prepared possessed a primary grain size of about 30 nm and specific surface area of 38 m2/g after being calcined at 850 °C for 2 h, showing much finer grains and less agglomeration. The as prepared nanopowder shows intense luminescence at 611nm under x-ray or ultraviolet excitation. Transparent (Y,Gd)2O3:Eu ceramics can also be fabricated using this high sinterable nanopowder.

Keywords

Chemical synthesisNanoparticleOptical spectroscopy
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 12 , December 2004 , pp. 3586 - 3591
Copyright
Copyright © Materials Research Society 2004

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