Defect-property correlations in garnet crystals. VI. The electrical conductivity, defect structure, and optical properties of luminescent calcium and cerium-doped yttrium aluminum garnet

S. R. Rotman, H. L. Tuller, C. Warde

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

The electrical and optical properties of calcium and cerium-doped yttrium aluminum garnet (Ca,Ce:YAG) have been studied. Ca,Ce:YAG is a mixed ionic and electronic conductor with an ionic conductivity activation energy of 4.3 eV. Evidence of cluster formation with a consequent higher-than-expected activation energy is presented. The cerium normally enters the crystal as Ce+4, but it may be converted to Ce+3 under reducing atmospheres at elevated temperatures.

Original languageEnglish
Pages (from-to)1209-1214
Number of pages6
JournalJournal of Applied Physics
Volume71
Issue number3
DOIs
StatePublished - 1 Dec 1992

ASJC Scopus subject areas

  • General Physics and Astronomy

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