EPR Investigations ofCe3+in Cubic Sites of CaO, SrO, and BaO

Abstract
The EPR of Ce3+ has been observed in sites of cubic symmetry for the first time. The unusually large deviation of the observed g values for Ce3+ in CaO, SrO, and BaO from the theoretical value calculated for a pure Γ7 ground state can be attributed mainly to static crystal-field admixtures.