Perturbations of the luminescence spectra of europium-edta salts caused by selected monovalent counterions

High resolution emission studies of europium-EDTA salts of the form M(I)Eu(EDTA), where M≡Li, Na, K, Rb, Cs, Ag and Tl, have been carried out. Each europium-EDTA salt produced a distinct luminescence spectrum recorded over the spectral range which included the transitions in the europium(III) ion fr...

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Bibliographic Details
Published in:Journal of alloys and compounds 1992-03, Vol.180 (1), p.201-207
Main Authors: Pesterfield, L.L., Stump, N.A., Schweitzer, G.K., Peterson, J.R.
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
Physics
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Summary:High resolution emission studies of europium-EDTA salts of the form M(I)Eu(EDTA), where M≡Li, Na, K, Rb, Cs, Ag and Tl, have been carried out. Each europium-EDTA salt produced a distinct luminescence spectrum recorded over the spectral range which included the transitions in the europium(III) ion from the 6D 0 level to the 7F 0–4 levels. Spectral changes included slight shifts in peak position and varying line splitting patterns. Evaluations of the splitting patterns suggest that the site symmetries of the europium(III) ion in all compounds are low. Tentative site symmetry assignments have been made to fit best the observed luminescence spectra.
ISSN:0925-8388
1873-4669
DOI:10.1016/0925-8388(92)90381-I