The influence of TiO2 concentration in some calcium-phosphate glasses

xTiO2∙(1−x)[P2O5·CaO] glass system, with x ranging from 0.5 to 15mol%, was prepared and the effect of modifier ion on spectroscopic properties with the help of optical absorption, photoluminescence, electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS) was examined. Optica...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2014-04, Vol.438, p.84-87
Main Authors: Toloman, D., Suciu, R., Leostean, C., Regos, A., Ardelean, I.
Format: Article
Language:English
Subjects:
Calcium-phosphate glasses
Electron paramagnetic resonance
Optical properties
Titanium ions
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Summary:xTiO2∙(1−x)[P2O5·CaO] glass system, with x ranging from 0.5 to 15mol%, was prepared and the effect of modifier ion on spectroscopic properties with the help of optical absorption, photoluminescence, electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS) was examined. Optical absorption and EPR spectra have indicated that titanium ions exist in Ti3+ state while photoluminescence spectra exhibited an emission band at about 415nm, which could be the result of the charge transfer band of Ti4+ ions. XPS spectroscopy studies have revealed that titanium ions exist in two oxidation states: 3+ and 4+. An analysis concerning the Ti3+ ions contents in these glasses was carried out.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2014.01.005