EPR of a non-Kramers iron ion in KTaO3
| Autor: | L. S. Sochava, S. A. Basun, V. É. Bursian, H. Hesse, D. V. Azamat, S. E. Kapphan, A. G. Razdobarin |
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| Rok vydání: | 1999 |
| Předmět: |
Materials science
Solid-state physics chemistry.chemical_element Condensed Matter Physics Oxygen Oxygen vacancy Electronic Optical and Magnetic Materials Ion law.invention Crystal Crystallography Nuclear magnetic resonance chemistry law Spectroscopy Electron paramagnetic resonance Perovskite (structure) |
| Zdroj: | Physics of the Solid State. 41:1303-1306 |
| ISSN: | 1090-6460 1063-7834 |
| DOI: | 10.1134/1.1130987 |
| Popis: | The EPR spectrum of the non-Kramers iron ion Fe4+ (S=2) in a KTaO3:Fe crystal appearing after illumination of the sample in the visible has been detected and studied. Because of the large initial splitting (|D|=4.15 cm−1), only transitions within the |±1〈 and |±2〈 doublets are seen experimentally. Superhyperfine structure in the spectrum of a non-Kramers ion in perovskites has been detected for the first time. A structure is proposed for the center responsible for the new EPR spectrum, which represents a complex of a Fe4+ ion substituting for Ta with an oxygen vacancy at the nearest anion site. |
| Databáze: | OpenAIRE |
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