Theoretical Study of the Mean and Resultant Change of Interaction Frequency for Oxygen-Oxygen Ion Dipoles in CaF2 Crystal

The purpose of this paper is to analyze and study the angular variation, in the presence of the external magnetic field, of the mean and resultant displacements of the dipole-dipole interaction frequency, O--O- ion dipoles in CaF2 crystal. The dipolar interaction frequencies of six sites of equivalent ions are described by their geometrical parts of their tensors and analyzed for four different cases. The conclusion is that the theoretical method provides a satisfactory approach in cases for which there are adequate data.