EPR Study of TiO2 (Rutile) Doped with Vanadium

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• 作者：A. I. Kokorin ; A. A. Sukhanov ; O. I. Gromov ; V. M. Arakelyan…
• 刊名：Applied Magnetic Resonance
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：47
• 期：5
• 页码：479-485
• 全文大小：613 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Analytical Chemistry
  
• 出版者：Springer Wien
• ISSN：1613-7507
• 卷排序：47

文摘

Samples of titanium dioxide, TiO<sub>2sub>, doped with vanadium ions (0.1 ≤ [Vn+]<sub>0sub> ≤ 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 TiO<sub>2sub> 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.