EPR study of Mn-implanted single crystal TiO2
| Autor: | Bekir Aktaş, Rustam Khaibullin, S. Güler, O N Lopatin, Bulat Rameev |
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| Rok vydání: | 2009 |
| Předmět: |
History
chemistry.chemical_element Manganese Spectral line Computer Science Applications Education Ion law.invention Crystal Condensed Matter::Materials Science Paramagnetism Crystallography chemistry law Rutile Condensed Matter::Strongly Correlated Electrons Electron paramagnetic resonance Single crystal |
| Zdroj: | Journal of Physics: Conference Series. 153:012052 |
| ISSN: | 1742-6596 |
| DOI: | 10.1088/1742-6596/153/1/012052 |
| Popis: | Single crystals of manganese-implanted TiO2 rutile have been investigated by electron paramagnetic resonance (EPR) technique at room temperature. ESR spectra have been interpreted to correspond to the transitions among the spin multiplet (S=3/2) of the paramagnetic Mn4+ ion. Characteristic six-line hyper-fine splitting of the ESR spectra resulting from the spin I=5/2 of the Mn55 nucleus has been observed. Analysis of EPR spectra shows that manganese in TiO2 rutile host substitutes for Ti4+ ions. Two equivalent Mn4+ centers have been observed in the EPR spectra in correspondence with two equivalent octahedral positions of Ti ions in the rutile structure. Parameters of the crystal field of orthorhombic symmetry on the Mn4+ centers have been obtained as result of computer modelling. |
| Databáze: | OpenAIRE |
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