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Identification of paramagnetic centers of gadolinium and iron in scandium and yttrium orthosilicates
Russian version
DOI: 10.21883/PSS.2023.05.56045.45
Vazhenin V. A.1, Potapov A. P.1, Subbotin K. A.2,3, Fokin A. V. 1, Artyomov M. Yu. 1, Titov A. I.2,3, Pavlov S. K.2,3
1Institute of Natural Sciences and Mathematics, Ural Federal University named after the First President of Russia B. N. Yeltsin, Yekaterinburg, Russia
2Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
3Mendeleev University of Chemical Technology, Moscow, Russia
Email: vladimir.vazhenin@urfu.ru, andrej.fokin@urfu.ru
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The study of grown Sc2SiO5 : Gd and Sc2SiO5 : Fe crystals was carried out by the paramagnetic resonance method. It has been established that Fe3+ ions replace Sc3+ in both crystallographic positions, while Gd3+ ions exhibit a single center localized in a larger position with a coordination number of 7. Measurement of the orientational behavior of the positions of transitions of Fe3+ and Gd3+ centers in two orthogonal planes made it possible to determine the parameters of their triclinic spin Hamiltonians. To determine the localization of impurity ions Cr3+, Fe3+ and Gd3+ in scandium and yttrium silicates, the orientation of the main Z axes of the fine structure tensors of the second rank was used. Keywords: scandium and yttrium silicates, impurity ions, paramagnetic resonance.
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