Magnetic circular dichroism of impurities in solids: MgO:Co

Abstract
The magnetic circular dichroism of a dilute MgO:Co single crystal in the visible-uv spectral region is reported. Several new dd transitions, previously undetected and unobservable in the absorption spectrum, are indentified. All bands exhibit complex fine structure, almost none of which is interpretable in terms of simple models for vibration-induced transitions of impurities in MgO.