Study of the vibronic effects from the Zeeman-field-induced Mössbauer spectra ofFe2+ions in octahedral symmetry. II. Cases of KMgF3:Fe2+and CaO:Fe2+

The Mössbauer spectra of ${\mathrm{Fe}}^{2+}$ in KMg${\mathrm{F}}_3$ and CaO have been studied under different magnitudes of an external magnetic field, oriented along the [100] and [111] directions, and these spectra are analyzed on the basis of the theory developed in the preceding paper. From the semiexperimental values of the Ham reduction factors thus deduced, the nature of the vibronic coupling in these systems is inferred.