Synthesis of (Y,Gd)2O3:Eu (YGO:Eu) Nano-Powder and Fabrication of Transparent Ceramics

doi:10.3724/SP.J.1077.2007.01089

Abstract

Abstract:

The synthesis of nano-sized Y_1.34Gd_0.6Eu_0.06O₃ (YGO:Eu) powder by using an AHC (ammonium hydrogen carbonate) precipitation technique was investigated. The precursor powders obtained were of crystalline and indexed to yttrium gadolinium normal carbonate. On calcination, the precursor powders were converted to crystalline yttrium gadolinium oxide at 600℃. The powder calcined at 1100℃ show better sintering behavior, mainly due to their narrowest particle size distribution and finest average particle size. Transparent YGO ceramics were prepared by sintering at 1670℃ for 2h in vacuum using the powders calcined at 1100℃. The YGO ceramics shows a high in-line transmittance of 74.6% in the visible-light region, much higher than that of transparent Y2O3 ceramics prepared by the same process.

Key words: nano powder, scintillator, YGO, yttria, gadolinia, transparent ceramics

CLC Number:

TQ174

LI Xiao-Dong,XIU Zhi-Meng,BAI Li-Li,GAO Tie,LIU Yi-Nong,HU Xiao-Zhi,SUN Xu-Dong. Synthesis of (Y,Gd)₂O₃:Eu (YGO:Eu) Nano-Powder and Fabrication of Transparent Ceramics[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.01089.

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Synthesis of (Y,Gd)₂O₃:Eu (YGO:Eu) Nano-Powder and Fabrication of Transparent Ceramics

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