gValue ofS-State Ions with(ns)1Configuration

Abstract

A theory of the $g$ shift is developed of $S$-state ions with an outer-shell configuration ${\mathrm{}\left(\mathrm{ns}\right)\mathrm{}}^1$ at octahedral and tetrahedral sites in crystals. A partial electron transfer through spin-orbit interaction from ligand ions to the $S$-state ion is assumed to be a dominant source for the $g$ shift. A superhyperfine interaction is also calculated in terms of molecular-orbital parameters which are used in the $g$ shift. Some experiments are suggested to confirm that the partial electron transfer is a dominant source for the $g$ shift.