Luminescence of Eu3+ in La1-xEuxTa7O19 (0<x≤1) solid solution

Shun ichi Kubota, Tadashi Endo, Hirotsugu Takizawa, Masahiko Shimada

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The luminescence properties of Eu3+ in La1-xEuxTa7O19 solid solution were examined systematically. In the structure the nearest neighbours of La3+ sites doped with Eu3+ ions are arranged two-dimensionally with proper separations of about 0.62 nm. An intense emission peak is observed at 610 nm together with supplementary weak peaks. All the peaks can be ascribed to 5Dj7Fj′ (j = 0,1; j′=0,1,2,3,4) transitions of Eu3+. The emission of the 5D07F2 transition becomes intense and saturates with the Eu3+ concentration. As a result, the profile of the concentration quenching implies that energy migration of excited Eu3+ hardly takes place in La1-xEuxTa7O19 solid solution.

Original languageEnglish
Pages (from-to)44-47
Number of pages4
JournalJournal of Alloys and Compounds
Volume217
Issue number1
DOIs
Publication statusPublished - 1995 Jan 15

Keywords

  • Energy migration
  • Luminescence
  • Quenching

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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