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Wide-Band EPR Spectroscopy of SrY2O4:Ho3+ Crystal

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Abstract

EPR spectra of impurity Ho3+ ions in oriented SrY2O4 single-crystals are registered at the temperature 4.2 K in the frequency range from 70 to 180 GHz. The results of measurements evidence for the substitution of Ho3+ ions for the Y3+ ions at the structurally nonequivalent sites R1 and R2 with the local Cs point symmetry. The values of g-factors, hyperfine structure constants and the energy gaps between the ground and the first excited non-degenherate crystal-field sublevels of the ground 5I8 multiplet are determined. The observed specific features of the ground states of Ho3+ ions (non-Kramers doublets with the zero-field splittings of 4.30 and 1.67 cm–1) open a possibility to identify transitions in optical spectra of SrY2O4:Ho and inelastic neutron scattering spectra of SrHo2O4 crystals.

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ACKNOWLEDGMENTS

Authors are grateful to O.A. Petrenko for oriented sample SrY1.95Ho0.05O4 provided for EPR spectra measurements.

Funding

The work of G.S.Sh. (measurement of EPR spectra) was carried out under the government assignment for FRC Kazan Scientific Center of RAS, the work of B.Z.M., R.G.B. and A.G.K. at KFU (growing and orienting SrY2O4:Ho3+ single crystals, analysis of measurement results) was supported by the Russian Science Foundation (project 19-12-00244).

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Authors and Affiliations

  1. Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia

    G. S. Shakurov

  2. Kazan Federal University, 420008, Kazan, Russia

    B. Z. Malkin, R. G. Batulin & A. G. Kiiamov

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  1. G. S. Shakurov
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  2. B. Z. Malkin
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  3. R. G. Batulin
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  4. A. G. Kiiamov
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Correspondence to G. S. Shakurov.

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Shakurov, G.S., Malkin, B.Z., Batulin, R.G. et al. Wide-Band EPR Spectroscopy of SrY2O4:Ho3+ Crystal. Opt. Spectrosc. 131, 1082–1086 (2023). https://doi.org/10.1134/S0030400X23100211

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