Abstract
The optical spectrum and electron paramagnetic resonance (EPR) parameters (gyromagnetic g factor and hyperfine structure constant A) for CdTe:V3+ have been calculated using the modified crystal-field theory. In this theory, the covalency factors Nt , Ne and the two spin-orbit (SO) coupling coefficients ζd, ζp are included in T d symmetry. The calculated optical spectrum and EPR parameters agree reasonably well with the experimental values. In addition, the calculated results show that the contribution from the ligand Te2− to the EPR parameters cannot be neglected because the ligand Te2− possesses a large SO coupling coefficient and strong covalency.
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