Abstract
Samples of titanium dioxide, TiO2, doped with vanadium ions (0.1 ≤ [Vn+]0 ≤ 5.0 at. %) at high temperature, were prepared in a polycrystalline state and investigated using X-, Q-, and W-band electron paramagnetic resonance, EPR, spectroscopy. Substitutional and interstitial V4+ centers in TiO2 lattice have been both observed in EPR spectra, and their spin-Hamiltonian parameters were calculated. Portions of paramagnetic and diamagnetic species of Vn+ ions were estimated. The effect of additional high temperature annealing on the valence state of vanadium centers is discussed.
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Acknowledgments
This work is supported in part by the Russian Foundation for Basic Research (project no. 14-03-90020_Bel-a). We are grateful to Prof. A. Kh. Vorob’ev (Department of Chemistry, M. V. Lomonosov Moscow State University) for kindly providing us with his program package.
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Kokorin, A.I., Sukhanov, A.A., Gromov, O.I. et al. EPR Study of TiO2 (Rutile) Doped with Vanadium. Appl Magn Reson 47, 479–485 (2016). https://doi.org/10.1007/s00723-016-0762-z
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DOI: https://doi.org/10.1007/s00723-016-0762-z