Relationship between local structures and ionic conductivity in ZrO2-Y2O3 studied by site-selective spectroscopy

Hiroo Yugami, A. Koike, M. Ishigame, T. Suemoto

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The luminescence properties of Eu3+ ions in yttria-stabilized zirconia crystals are studied on samples with various yttria concentrations by using site-selective spectroscopy. From the analysis of luminescence spectra excited by ultraviolet light, it is found that the average crystal-field strength which acts on the Eu3+ ions increases with increasing dopant concentration. A detailed analysis of the site-selective spectra reveals that three distinct, but very similar sites for Eu3+ ions exist and, furthermore, the existence ratio of each site continuously changes with increasing dopant concentration. We propose local-structure models around the Eu3+ ions and discuss the relationship between local structures and ionic conductivity in this system.

Original languageEnglish
Pages (from-to)9214-9222
Number of pages9
JournalPhysical Review B
Volume44
Issue number17
DOIs
Publication statusPublished - 1991 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics

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