Investigations of the EPR parameters for Sm3+ ions in KY3F10 and LiYF4 crystals.
In this paper, we calculate the EPR parameters (g factors g parallel, g perpendicular and hyperfine structure constants A parallel, A perpendicular) of rare earth ion Sm3+ in fluoride crystals KY3F10 and LiYF4 from the perturbation formulas of EPR parameters for a 4f5 ion in tetragonal symmetry. In these formulas, the crystal-field J-mixing of the first and second excited-state multiplets 6H(7/2) and 6H(9/2) into the ground state multiplet 6H(5/2), the mixtures among the states with the same J value via spin-orbit coupling interaction and the interactions between the ground Kramers doublet Gammagamma and the same irreducible representation as Gammagamma in other 11 Kramers doublets Gammax within 6HJ (J=5/2, 7/2, 9/2) states via crystal-field and orbital angular momentum (or hyperfine structure) are considered. The calculated results (which are in agreement with the observed values) are discussed.
Hui-Ning
Dong
D
Institute of Solid State Physics, Sichuan Normal University, Chengdu 610066, China.
Wen-Chen
Zheng
Z
Shao-Yi
Wu
W
Sheng
Tang
T
D004578:Electron Spin Resonance Spectroscopy / Q000379:methods; D005459:Fluorides / Q000737:chemistry*; D018020:Lithium Compounds / Q000737:chemistry*; D017680:Potassium Compounds / Q000737:chemistry*; D012493:Samarium / Q000737:chemistry*
D018020:Lithium Compounds; D017680:Potassium Compounds; D012493:Samarium; D005459:Fluorides