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Ti3+ production under ionizing radiation in aluminoborosilicate glasses studied by EPR spectroscopy

Abstract : Reduction processes under irradiation of Ti4+ ions in aluminoborosilicate glasses have been studied by EPR spectroscopy at 20 K. Different parameters like the [Na]/[Ti] ratio and the integrated dose were analyzed in this work. Simulation of the Ti3+ ion EPR spectra has shown three different Ti3+ environment attributed to one Ti-[VI](3+) and two Ti-[V](3+) environment (square pyramid and trigonal bi-pyramid). The Ti-[VI](3+) ion environment is observed only for higher [Na]/[Ti] ratios although the two others are observed for all values of the [Na]/[Ti] ratio considered. (C) 2011 Elsevier B.V. All rights reserved.
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Submitted on : Wednesday, November 26, 2014 - 2:11:24 PM
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Pierre Lombard, N. Ollier, Bruno Boizot. Ti3+ production under ionizing radiation in aluminoborosilicate glasses studied by EPR spectroscopy. Journal of Non-Crystalline Solids, Elsevier, 2011, 357 (14), pp.2719-2722. ⟨10.1016/j.jnoncrysol.2010.12.070⟩. ⟨hal-01087626⟩

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