Article ID Journal Published Year Pages File Type
9756913 Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2005 4 Pages PDF
Abstract
From the high-order perturbation formulas of EPR parameters (zero-field splitting D, g factors g∥, g⊥ and hyperfine structure constants A∥, A⊥) based on the two spin-orbit coupling parameter model for 3d3 ions in trigonal symmetry, the EPR parameters of Cr3+ and V2+ ions in HfS2 crystals are calculated. From the calculations, it is found that the local trigonal distortion angle θ of impurity center in HfS2:Cr3+ is smaller than that in HfS2:V2+. The dominant cause of the small zero-field splitting |D| and g-anisotropy |Δg| = |g∥ − g⊥| in HfS2:Cr3+ (compound to HfS2:V2+) is due to the small local trigonal distortion angle θ rather than to the small impurity-ligand distance R in HfS2:Cr3+.
Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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