Studies of the electric-field-induced zero-field splitting for a substitution Mn2+ ion in SrCl2 crystal

The zero-field splittings induced by the electric-field have been studied theoretically from the formulas, including three important microscopic mechanisms for a substitutional Mn2+ ion in SrCl2 crystal. From the studies, it is found that the zero-field splitting can be attributed primarily to the electric-field-induced displacement of Mn2+ ion along the electric-field direction and the magnitudes of the displacements at various strengths of electric-field are obtained. The results are comparable with those obtained from the potential-energy curve of Mn2+ center.