Temperature dependence of homogeneous line width of Eu3+ in β″-alumina studied by fluorescence line narrowing spectroscopy

H. Yugami, T. Watanabe, H. Arashi, T. Hattori, M. Ishigame

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4 Citations (Scopus)

Abstract

We have measured the temperature dependence of the homogeneous spectral line width Γh of Eu3+ in β″-alumina, which is a typical superionic conductor, using fluorescence line narrowing spectroscopy, and have discussed dephasing mechanisms of luminescence from Eu3+ ions in this system. Due to the structural disorder in the two-dimensional conduction planes of β″-alumina crystals, the temperature dependences of Γh of Eu3+ ion in both Beevers-Ross (BR) and mid-oxygen (mO) sites are essentially the same as those previously observed in glassy materials. However, the Eu3+ concentration as well as the temperature dependences of Γh of the Eu3+ ion in the mO site are quite different from those in the BR site. This fact strongly indicates that the dominant dephasing mechanisms of Γh of Eu3+ ion in these two sites are different from each other. This result is attributed to the intermediate nature of β″-alumina between ordered and disordered materials.

Original languageEnglish
Pages (from-to)277-285
Number of pages9
JournalJournal of Luminescence
Volume55
Issue number5-6
DOIs
Publication statusPublished - 1993

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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