12 July 2002 Blue fluorescence of Ti3+ ions in LaGaO3/SrTiO3 mixed crystals
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Proceedings Volume 4766, XI Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transition Metal Ions; (2002) https://doi.org/10.1117/12.475317
Event: XI Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transition Metal Ions, 2001, Kazan, Russian Federation
Abstract
In the absorption spectrum of the crystal there was stated the presence of Ti3+ ions at octahedral Ga positions in strong crystal field. Ti3+ ions arise due to some reducing conditions of the crystal growth. It was found that electron delocalization at higher temperature, e.g. In oxidation-reduction reaction: Ti4+ + e equals Ti3+ may appear in optical spectra as charge transfer bands in the NIR region giving rise to blue absorption. The observed fluorescence of 2T2-2E transition of Ti3+ in the LaGaO3/SrTiO3 mixed crystals shows two bands centered at about 420 and 447 nm coming from excitation at 314, 340 and 384 nm.
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Slawomir Maksymilian Kaczmarek, Slawomir Maksymilian Kaczmarek, } "Blue fluorescence of Ti3+ ions in LaGaO3/SrTiO3 mixed crystals", Proc. SPIE 4766, XI Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transition Metal Ions, (12 July 2002); doi: 10.1117/12.475317; https://doi.org/10.1117/12.475317
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