Abstract
The crystal field energy levels of Cr3+-doped Gd3Sc2Ga3O12 (GSGG) garnet crystals are calculated from the complete diagonalization (of energy matrix) method based on the two-spin-orbit-parameter model, where the contributions due to both the spin-orbit parameter of central dn ion and that of ligand ions are contained. The calculated results indicate that the seven crystal field energy levels available in experiments are rationally explained by this method with only three adjustable parameters. On account of the calculations, the defect structure (specifically, the angular distortion) of the trigonal Cr3+ impurity center in GSGG crystals is also evaluated. The results are discussed.
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