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 language | English |
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| Pages (from-to) | 9214-9222 |
| Number of pages | 9 |
| Journal | Physical Review B |
| Volume | 44 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 1991 |