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Effect of Phosphorus-Containing Dispersant on the Microstructure and Optical Properties of Scintillation Ceramic (Gd,Y)3(Al,Ga)5O12:Ce with Garnet Structure

  • 期刊论文

  • 发表日期：

    2024年8月1日

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  • P. V. Karpyuk,
  • L. V. Ermakova,
  • V. V. Dubov,
  • D. E. Lelekova,
  • R. R. Saifutyarov,
  • P. A. Zhdanov,
  • M. S. Malozovskaya,
  • I. Yu. Komendo,
  • P. S. Sokolov,
  • A. G. Bondarau,
  • M. V. Korzhik

摘要

Abstract

Phosphoric acid ester, a typical component of commercial dispersants, affects the functional properties of Gd1.494Y1.494Ce0.012Al2Ga3O12 ceramics. In sintered ceramics, the residual phosphorus can reach up to 40–70% of the introduced amount. The admixture of phosphorus located on the surfaces of the particles activates the grain growth during sintering and leads to the formation of secondary phases of rare-earth phosphates. With increasing phosphorus concentration, the density and optical transmittance of ceramics decrease. A relatively small amount of phosphorus can improve the luminescence properties of ceramics but large amounts can increase phosphorescence and reduce the scintillation light yield.