Magnetism

Paramagnetic centers in chromium-doped scandium orthosilicate

V. A. Vazhenin^a, A. P. Potapov^a, A. V. Fokin^a, M. Yu. Artemov^a, V. A. Isaev<sup>b

a</sup> Institute of Natural Sciences and Mathematics, Ural Federal University, Yekaterinburg, Russia
^b Kuban State University, Krasnodar, Russia

Abstract: The EPR spectrum of single crystals of scandium orthosilicate doped with chromium was studied in the X-band. In the crystallographic and local coordinate systems, the parameters of the spin Hamiltonians of two Cr$^{3+}$ centers that have replaced scandium in the nonequivalent triclinic positions and demonstrate orthorhombic symmetry in the principal axes are determined. The spectrum of the Gd$^{3+}$ center localized in one of scandium position was discovered and studied, and the parameters of the fine structure of its ground state were determined. In the studied crystals, EPR signals of unidentified paramagnetic centers also were observed.

Keywords: scandium orthosilicate, impurity ions, paramagnetic resonance.

Received: 10.03.2022
Revised: 10.03.2022
Accepted: 05.05.2022

DOI: 10.21883/FTT.2022.08.52691.374

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