## Abstract

The electronic paramagnetic resonance g factors g(parallel to), g(perpendicular to) of Dy3+ centers and the hyperfine structure constants A(parallel to) and A(perpendicular to) of Dy-161(3+) and Dy-163(3+) isotopes in ZrSiO4 crystal are theoretically studied from the perturbation formulas of the spin Hamiltonian parameters for a 4f(9) ion in tetragonal symmetry. In these formulas, the contributions to g factors due to the J-mixing among the ground H-6(15/2), the first excited H-6(13/2) and second excited H-6(11/2) states via crystal-field interaction, the admixtures among the states with the same J value via spin-orbit coupling interaction and the interactions between the lowest Kramers doublet Gamma gamma and other 20 Kramers doublets Gamma(X) within the states H-6(J) (J = 15/2, 13/2 and 11/2) via crystal-field and orbital angular momentum interactions are considered. The calculated EPR parameters show reasonable agreement with the observed values. The results are discussed.

Original language | English |
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Pages (from-to) | 289-296 |

Number of pages | 8 |

Journal | Modern Physics Letters B |

Volume | 24 |

Issue number | 3 |

DOIs | |

Publication status | Published - 30 Jan 2010 |

## Keywords

- Electron paramagnetic resonance
- crystal-field theory
- Dy3+
- ZrSiO4
- YVO4
- SINGLE-CRYSTALS
- PARAMAGNETIC-RESONANCE
- SUPERPOSITION-MODEL
- YB3+ IONS
- ZIRCON
- YVO4