Abstract

Considerably different fine structures have been displayed in EPR experiments for the 6S-state ions Mn2+ and Fe3+ in CdS crystal, i.e. for the EPR parameter D, D > 0 for CdS:Mn2+ while D < 0 for CdS:Fe3+. To understand this interesting phenomenon the covalency spin-orbit coupling interaction is introduced to the calculation. It is shown that the characteristics of the ground-state splitting in CdS:Mn2+ and CdS:Fe3+ can be attributed to the combined effect of the trigonal ligand field and the covalency spin-orbit coupling interaction. © 1997 Elsevier Science Ltd

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