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Local Structural Parameters of the Tetragonal V 2+ –V M Centers in MCl:V 2+ (M = Na, K, Rb) Crystals Estimated from EPR Data
Author(s) -
Wu ShaoYi,
Zheng WenChen
Publication year - 1998
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199805)207:1<45::aid-pssb45>3.0.co;2-2
Subject(s) - electron paramagnetic resonance , tetragonal crystal system , ion , perturbation (astronomy) , coupling parameter , coupling (piping) , symmetry (geometry) , atomic physics , perturbation theory (quantum mechanics) , zero field splitting , chemistry , crystallography , physics , nuclear magnetic resonance , materials science , crystal structure , quantum mechanics , mathematics , electron , geometry , metallurgy , spin polarization
The high‐order perturbation formulas of zero‐field splitting D and gyromagnetic factors g ∥ and g ⊥ for 3d 3 ions in tetragonal symmetry are established by using a two‐spin–orbit(SO)‐parameter model where the contributions to these EPR parameters from both the SO coupling of the central 3d 3 ions and that of the ligands are considered. From these formulas, the local structural parameters for the tetragonal V 2+ –V M centers in MCl:V 2+ (M = Na, K, Rb) crystals are estimated from the EPR data. The results are compared with those obtained from the conventional one‐SO‐parameter model where only the contribution of the SO coupling of central 3d 3 ions is included. The reasonableness of the results based on the two‐SO‐parameter model is discussed.