Calculations of Static Distortion of a MgO Crystal in the Presence of Paramagnetic Impurities

Using the shell-model results for MgO, the static distortions of this crystal due to the substitution of paramagnetic impurities have been calculated in the ionic approximation. The static and dynamic crystal field parameters for a number of a paramagnetic ions in a distorted MgO crystal are evaluated. The agreement between the theoretical and experimental values improves if the static distortions are taken into consideration.