材料期刊网

A two spin-orbit coupling parameter model based on a cluster approach is presented in this paper for the calculations of the g factor for V3+ ions in the cation sites of GaP, InP and GaAs crystals. In this model, differing from the conventional one spin-orbit coupling parameter model, both the contributions from the spin-orbit coupling of the central 3d(2) ion and those of ligand ions are included. By using the parameters obtained from the optical spectra of the studied crystals, the calculated g shifts (g - 2.0023) are in good agreement with the observed values. Various contributions to the g shift are discussed.