Electron paramagnetic resonance of Ce3+ ions in lead thiogallate single crystals |
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| Authors: | G R Asatryan V V Badikov D D Kramushchenko V A Khramtsov |
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| Institution: | 1. Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia
2. Kuban State University, ul. Stavropolskaya 149, Krasnodar, 350040, Russia
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| Abstract: | The results of electron paramagnetic resonance (EPR) studies of Ce3+ impurity ions in single crystals of lead thiogallate PbGa2S4 have been reported. The Ce3+ ions substitute for Pb2+ ions in the crystal lattice of PbGa2S4. A number of paramagnetic cerium centers in lead thiogallate have been observed. The spectra are described by the spin Hamiltonian of rhombic symmetry with the effective spin S = 1/2. The g factors of the main cerium centers have been determined. A large number of paramagnetic centers are due to both nonequivalent positions of lead and local charge compensation under the substitution Ce3+ ?? Pb2+. |
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