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Rare-Earth-Activated Fluorophosphate Glasses: Local Environment of the Activator and Capture Volume Model

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Inorganic Materials Aims and scope

Abstract

Data are presented on the induced optical absorption and EPR in Ba(PO3)2-MgF2 glasses activated with Tb2O3 and Eu2O3. The effect of activator concentration on the EPR spectra of the PO 2−4 and PO 2−3 centers in glasses differing in fluoride content is analyzed. The results indicate that fluorophosphate glasses can be characterized by two capture volumes which may differ several times, depending on the activator concentration. At low activator concentrations, corresponding to the largest capture volume, the activator ions seem to be in a phosphate environment. The maximum Tb3+ concentration is comparable to the Eu3+ concentration at which the luminescence spectrum points to a phosphate environment of the rare-earth ion.

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Authors and Affiliations

  1. St. Petersburg State Polytechnical University, Politekhnicheskaya ul. 29, St. Petersburg, 195251, Russia

    T. V. Bocharova, A. M. Mironov & G. O. Karapetyan

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  1. T. V. Bocharova
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  2. A. M. Mironov
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  3. G. O. Karapetyan
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__________

Translated from Neorganicheskie Materialy, Vol. 41, No. 8, 2005, pp. 1016–1024.

Original Russian Text Copyright ¢ 2005 by Bocharova, Mironov, Karapetyan.

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Bocharova, T.V., Mironov, A.M. & Karapetyan, G.O. Rare-Earth-Activated Fluorophosphate Glasses: Local Environment of the Activator and Capture Volume Model. Inorg Mater 41, 892–899 (2005). https://doi.org/10.1007/s10789-005-0232-8

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  • DOI: https://doi.org/10.1007/s10789-005-0232-8

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