Luminescence from Cr3+ ions in mixed-cation β-alumina crystals

Takeshi Hattori, Hiroo Yugami, Mareo Ishigame

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The decay of the luminescence from Cr3+ ions in mixed-cation (Na1-xAgx and Na1-xLix) β-alumina crystals was measured to study the disorder characteristics of the conduction plane. The decay curves of the luminescence bands obtained for all samples cannot be represented by using a combination of the exponential functions, but require that of the extended-exponential function. This result will be related to a disordered character of the conduction plane. Moreover, from the analyses of the decay feature and the electron-phonon interaction, it is suggested that the two kinds of conduction ions in the plane for samples near x=0.4 of Na1-xAgx β-alumina, in which the conductivity is remarkably lower, make a special structure.

Original languageEnglish
Pages (from-to)471-475
Number of pages5
JournalSolid State Ionics
Issue numberPART 1
Publication statusPublished - 1994


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