Fe-Fe coupling in iron-doped lithium aluminate phosphors

Luminescence results for LiAl5-xFexO8, where the iron content lay in the range 0.005-0.500 for stoichiometric nominal x-values, are presented. Results show that the luminescence quenching of lithium aluminate, doped with a wide range of iron concentrations, is due mostly to the formation of short-ra...

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Bibliographic Details
Published in:Journal of materials science letters 1992-01, Vol.11 (11), p.742-744
Main Authors: NETO, J. M, ABRITTA, T
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Photoluminescence
Physics
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Summary:Luminescence results for LiAl5-xFexO8, where the iron content lay in the range 0.005-0.500 for stoichiometric nominal x-values, are presented. Results show that the luminescence quenching of lithium aluminate, doped with a wide range of iron concentrations, is due mostly to the formation of short-range pairs and long-range agglomerates of iron ions rather than to the lithium aluminate and lithium ferrite phase segregation observed for these compounds. 17 refs.
ISSN:0261-8028
1573-4811
DOI:10.1007/BF00729478