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EPR study of Ti3+ ions formed under beta irradiation in silicate glasses.
Abstract : Reduction processes of Ti4+ ions in various silicate glasses have been studied by EPR spectroscopy at 20 K. Different parameters like the [Na]/[Ti] ratio, the integrated dose and Ti3+ ions ageing processes were analyzed in this work. Simulation of the Ti3+ ion EPR spectra in different Ti-doped silicate glasses 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 [Na]/[Ti] ratios higher or equal to 68 although the two others are observed for all values of the [Na]/[Ti] ratio considered. In terms of relative proportions, the Ti3+ ions in a square pyramid of oxygen are the dominant species.
Cited literature [20 references]
https://hal-polytechnique.archives-ouvertes.fr/hal-00599077
Contributor : Boizot Bruno <>
Submitted on : Wednesday, June 8, 2011 - 2:06:46 PM
Last modification on : Friday, July 31, 2020 - 9:24:06 AM
Long-term archiving on: : Friday, September 9, 2011 - 12:05:26 PM
Contributor : Boizot Bruno <>
Submitted on : Wednesday, June 8, 2011 - 2:06:46 PM
Last modification on : Friday, July 31, 2020 - 9:24:06 AM
Long-term archiving on: : Friday, September 9, 2011 - 12:05:26 PM
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lombardetal_jncs2010-v3.pdf
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