Investigations of g factors for the 2E state of V2+ ions in Al2O3 crystals

► The g factors for the 4A2 and 2E state of V2+ ions in Al2O3 are studied theoretically. ► The contributions to optical spectra from non-nearest-neighbor ligands are studied. ► The defect structure of Al2O3:V2+ crystal is obtained. ► The optical spectra of Al2O3:V2+ crystal is studied.