Abstract
EPR spectra of a CaF2 single crystal that was grown from melt containing a small addition of NdF3 were studied. Signals corresponding to tetragonal centers of Nd3+ ions and cubic centers of Er3+ and Yb3+ ions were found. Superhyperfine structure (SHFS) in the spectra of the Nd3+ ions was observed for the first time in this crystal; parameters of the superhyperfine interaction of the Nd3+ ions with the nearest nine fluorine ions were determined. The dependence of the resolution of the Nd3+ EPR spectrum SHFS on the incident microwave power at the temperature of T ≈ 6 K was studied. Obtained results are discussed and compared with the literature data.
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Original Russian Text © L.K. Aminov, M.R. Gafurov, I.N. Kurkin, B.Z. Malkin, A.A. Rodionov, 2018, published in Fizika Tverdogo Tela, 2018, Vol. 60, No. 5, pp. 910–913.
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Aminov, L.K., Gafurov, M.R., Kurkin, I.N. et al. Superhyperfine Structure of the EPR Spectra of Nd3+ Impurity Ions in Fluorite CaF2. Phys. Solid State 60, 912–915 (2018). https://doi.org/10.1134/S1063783418050037
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DOI: https://doi.org/10.1134/S1063783418050037