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 [VI]Ti3+ and two [V]Ti3+ environment (square pyramid and trigonal bi-pyramid). The [VI]Ti3+ 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.
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Pierre Lombard, Nadège Ollier, Bruno Boizot. Ti3+ production under ionizing radiation in aluminoborosilicate glasses studied by EPR spectroscopy. Conference on the Structure of Non-Crystalline Materials (NCM11), Jun 2010, Paris, France. pp.2719-2722, ⟨10.1016/j.jnoncrysol.2010.12.070⟩. ⟨hal-00599085⟩

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