An electron paramagnetic resonance study on Sm3+ and Yb3+ in KY3F10 crystals

Yamaga, M. and Honda, M. and Wells, J.-P.R. and Han, T.P.J. and Gallagher, H.G. (2000) An electron paramagnetic resonance study on Sm3+ and Yb3+ in KY3F10 crystals. Journal of Physics: Condensed Matter, 12 (40). pp. 8727-8736. ISSN 0953-8984 (https://doi.org/10.1088/0953-8984/12/40/314)

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Abstract

Electron paramagnetic resonance (EPR) spectra of Sm3+ and Yb3+ ions in KY3F10 single crystals have been measured at X-band microwave frequencies and low temperatures. The EPR lines have been fitted to a tetragonal spin Hamiltonian to determine effective g-values (g, g). The observed g-values, (g=0.714(2), g=0.11(1)), for Sm3+ are in agreement with those calculated via crystal-field J-mixing of the first excited-state multiplet 6H7/2 into the groundstate multiplet 6H5/2 of Sm3+ as the second-order perturbation. On the other hand, the observed g-values, (g=5.363(5), g=1.306(2)) for Yb3+ are coincident with those calculated via mixing in only the groundstate multiplet 2F7/2 as the first-order perturbation because the first excited-state multiplet 2F5/2 lies above ~10 000 cm-1 from the groundstate. The groundstate eigenfunctions of Sm3+ and Yb3+ obtained from the EPR results are close to those calculated from a C4v symmetry crystal-field analysis applied to their optical transitions. The distortions of the Sm3+ and Yb3+ complexes in KY3F10 are discussed in the term of the crystal-field Hamiltonian in comparison with LiYF4.

ORCID iDs

Yamaga, M., Honda, M., Wells, J.-P.R., Han, T.P.J. ORCID logoORCID: https://orcid.org/0000-0002-2303-6861 and Gallagher, H.G.;
  • Item type:Article
    ID code:50968
    Dates:
    Date
    Event
    9 October 2000
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:09 Jan 2015 11:53
    Last modified:11 Nov 2024 10:54
    URI:https://strathprints.strath.ac.uk/id/eprint/50968
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