Synthesis and fluorescence properties of Tb2Te4O11

T. Endo, A. Shibuya, T. Sato, M. Shimada

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5 Citations (Scopus)

Abstract

A new compound, Tb2Te4O11, with monoclinic symmetry was synthesized by the solid-state reaction of TeO2 and Tb4O7 in the temperature range 700-800°C in air. Its lattice parameters were calculated to be a = 12.54 Å, b = 5.124 Å, c = 16.08 Å, and β = 106.08°. On heating at 800°C for a long time, the compound gradually changed its chemical formula to Tb2Te4-yO11-2y (y ≤ 0.25) without any structural changes. Also, solid solutions of (Y1-xTbx)2Te4O11 were synthesized in the range 0.01 ≤ x ≤ 1.0. When the amount of Tb3+ increased, the 5D4 emission became intense, whereas the 5D3 emission was quenched by cross-relaxation. Such fluorescence profiles were examined and discussed to provide an understanding of the energy transfer process with respect to the concentration of Tb3+ ion.

Original languageEnglish
Pages (from-to)237-241
Number of pages5
JournalJournal of Solid State Chemistry
Volume78
Issue number2
DOIs
Publication statusPublished - 1989 Feb

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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