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Luminescence and vibrational spectra of Ba5Li2W3O15

Name: Luminescence and vibrational spectra of Ba5Li2W3O15
Creator: Blasse, G.
Keywords: 02 engineering and technology, Scheikunde, 0210 nano-technology, 01 natural sciences, 0104 chemical sciences

descriptionPublicationkeyboard_double_arrow_right Article 01 Aug 1975 Netherlands English Publisher:Elsevier BVJournal:Journal of Solid State Chemistry, volume 14, pages 366-371 (issn: 0022-4596,

Authors: Blasse, G.;

doi: 10.1016/0022-4596(75)90057-2

Luminescence and vibrational spectra of Ba5Li2W3O15

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Abstract

The infrared and Raman spectra of Ba5Li2W3O15 are reported down to 200 cm−1. From the internal stretching modes of the tungstate octahedra the crystallographic order between lithium and tungsten in the face-sharing octahedra can be derived. The green tungstate luminescence shows a low quenching temperature that is described with the Dexter-Klick-Russell model. The U6+ ion shows a yellow emission in Ba5Li2W3O15. There is ample evidence for two different U6+ centers with different decay times (10 and 80 μsec) and different emission and excitation spectra. One of these is located in a single layer of tungstate octahedra, the other in a double layer of octahedra.

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Netherlands

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Utrecht University
Netherlands
University Museum Utrecht
Netherlands

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Scheikunde

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