Abstract
In a Li2CaSiO4 crystal, tetragonal Cr4+ centers (electron configuration 3d2, spin S = 1) are identified and investigated by the ESR method at different frequencies. The magnitude of zero-field splitting is determined. An additional signal with a reverse phase is observed in the region, in which the positions of the two transitions of Cr4+ coincide. For an uncontrolled impurity of Mn2+ ions (S = I = 5/2), the parameters and localization of the spin Hamiltonian are determined.
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ACKNOWLEDGMENTS
We are grateful to G.R. Bulke for providing samples and V.A. Shustov for orienting them on an X-ray diffractometer.
Funding
This work was supported by the Ministry of Science and Higher Education of the Russian Federation within topic no. FEUZ-2020-0054. The study at the Zavoisky Physical–Technical Institute, Federal Research Center Kazan Scientific Center, Russian Academy of Sciences, was carried out within the framework of State Assignment AAAA-A18-118030690040-8.
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Vazhenin, V.A., Shakurov, G.S. & Potapov, A.P. Paramagnetic Resonance of Cr4+ and Mn2+ Ions in a Li2CaSiO4 Crystal. Phys. Solid State 62, 2105–2109 (2020). https://doi.org/10.1134/S1063783420110384
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DOI: https://doi.org/10.1134/S1063783420110384