THEORETICAL INVESTIGATION OF OPTICAL AND EPR SPECTRA OF Ni2+ IONS DOPED IN RbCdF3 CRYSTAL
Pages 28-31
A. Lucaci, E. Preda, N. M. Avram
Abstract
The aim of this paper is the theoretical investigations of the Ni2+ doped in CsCdF3 in an deformed octahedral environments. The optical energy levels scheme has been calculated in the frame of exchange charge model of crystal field, using the geometry of the title crystal. In this model the crystal field parameters was calculated and then the Hamiltonian of the system was diagonalized. The spin-Hamiltonian parameters of Ni2+ ion in low symmetry of the title host matrix were calculated using perturbation theory, with double spin-orbit interaction approximation in the cluster model.In these calculations we used the Racah parameter values best fited the experimental data during simulation of the optical spectra.The obtained results are in satisfactory agreement with the experimental data, which confirm the validity of used models in both optical and EPR spectra.