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Jahn-teller chromium ions in CdF2 and CaF2 crystals: An EPR spectroscopic study in the frequency range 9.3–300 GHz

  • Semiconductors and Dielectrics
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Abstract

The bivalent chromium impurity centers in CdF2 and CaF2 crystals are investigated using electron paramagnetic resonance (EPR) in the frequency range 9.3–300 GHz. It is found that Cr2+ ions in the lattices of these crystals occupy cation positions and form [CrF4F4]6− clusters whose magnetic properties at low temperatures are characterized by orthorhombic symmetry. The parameters of the electron Zeeman and ligand interactions of the Cr2+ ion with four fluorine ions in the nearest environment are determined. The initial splittings in the system of spin energy levels of the cluster are measured.

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Authors and Affiliations

  1. Kazan Physicotechnical Institute, Russian Academy of Sciences, Sibirskii trakt 10/7, Kazan 29, 420029, Tatarstan, Russia

    M. M. Zaripov, V. F. Tarasov, V. A. Ulanov & G. S. Shakurov

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  1. M. M. Zaripov
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  2. V. F. Tarasov
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  3. V. A. Ulanov
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  4. G. S. Shakurov
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__________

Translated from Fizika Tverdogo Tela, Vol. 44, No. 11, 2002, pp. 1958–1962.

Original Russian Text Copyright © 2002 by Zaripov, Tarasov, Ulanov, Shakurov.

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Zaripov, M.M., Tarasov, V.F., Ulanov, V.A. et al. Jahn-teller chromium ions in CdF2 and CaF2 crystals: An EPR spectroscopic study in the frequency range 9.3–300 GHz. Phys. Solid State 44, 2050–2054 (2002). https://doi.org/10.1134/1.1521454

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  • DOI: https://doi.org/10.1134/1.1521454

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