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Low-symmetry paramagnetic center in a KTaO |
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| Authors: | L. S. Sochava S. A. Basun V. É. Bursian V. S. Vikhnin A. G. Razdobarin D. R. Evans S. E. Kapphan |
| Affiliation: | 1.Ioffe Physicotechnical Institute,Russian Academy of Sciences,St. Petersburg,Russia;2.Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base,Ohio,USA;3.FB Physik,Universit?t Osnabrück,Osnabrück,Germany |
| Abstract: | A new paramagnetic center of orthorhombic symmetry with spin S = 1/2 is revealed in KTaO3: Ni crystals. The well-resolved superhyperfine EPR structure consisting of 15 components indicates preferred interaction of the center with two tantalum nuclei (181Ta, I = 7/2). This center does not decay and its orientation remains unchanged up to room temperature. Possible models of the center are discussed. |
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