Theoretical investigations of EPR parameters for trigonal Sm3+ ion in La2Mg3(NO3)(12)center dot 24H(2)O crystal

Hui-Ning Dong, Shao-Yi Wu, David J. Keeble

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    Abstract

    The electron paramagnetic resonance parameters g factors g(parallel to) and g(perpendicular to) of Sm3+ and hyperfine structure parameters All and A-L of Sm-147(3+) and Sm-149(3+) isotopes in La2Mg3(NO3)(12)center dot 24H(2)O crystal are calculated from the perturbation formulas of EPR parameters for 4f(5) ion in trigonal symmetry. In these formulas, the J-mixing among the H-6(J) (J=5/2, 7/2 and 9/2) states via crystal-field interactions, the mixtures among the states with the same J value via spin-orbit coupling interaction, and the interactions between the lowest Kramers doublet Gamma gamma and the same irreducible representations in the other 11 Kramers doublets Gamma x via crystal-field and orbital angular momentum (or hyperfine structure) interactions are considered. The crystal-field parameters for the studied Sm3+ centre are obtained from the superposition model. The theoretical calculated results are in reasonable agreement with the experimental values. (C) 2007 Elsevier B.V. All rights reserved.

    Original languageEnglish
    Pages (from-to)702-704
    Number of pages3
    JournalJournal of Alloys and Compounds
    Volume451
    Issue number1-2
    DOIs
    Publication statusPublished - 28 Feb 2008

    Keywords

    • electron paramagnetic resonance
    • superposition model
    • Sm3+
    • La2Mg3(NO3)(12)center dot 24H(2)O
    • NEUTRON-DIFFRACTION

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