Abstract
AbstractThe dispersion of magnetic circular dichroism (MCD) and Faraday rotation (FR) for Ce3+ photochromic centres in CaF2 is measured at T = 1.7 °K. The optical technique of EPR detection is used to separate the paramagnetic and diamagnetic contributions to the MCD. From the phenomenological analysis of the MCD paramagnetic and diamagnetic parts is found that the optical transition to the lowest excited state is split into at least three components. This splitting as well as the presence of the paramagnetic contribution into the MCD are assumed to be due to an exchange interaction of 4f electron of Ce3+ with the photochromic centre, other electrons involving spin‐orbital interaction.
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