Optical absorption of Co2+ in LiCoPO4

1999 
Abstract Optical spectra of Co 2+ in LiCoPO 4 are analysed theoretically by using a crystal-field Hamiltonian of C S local symmetry. In this analysis the energy level scheme is determined. Crystal-field parameters are obtained. The influence of the spin–orbit interaction is also considered. Using symmetry considerations the polarised optical absorption spectrum in LiCoPO 4 is briefly discussed. Calculations of the temperature dependence of magnetic susceptibility are performed using only a 4 F basis. Calculated results are compared with experimental data and satisfactory agreement has been obtained.
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