Hyperfine interactions in Fe2+ salts

Abstract

Magnetic hyperfine field data for a number of Fe²⁺ salts are summarized and discussed in terms of the theory of hyperfine interactions in solids. The qualitative agreement between theory and experiment is good, and the relative importance of the contributions from the orbital and spin moment of the ion seems to be understood. The effects of covalency are considered, and it appears that if they could be quantiatively interpreted, the measurement of hyperfine fields could be a powerful as well as sensitive method for studying chemical bonding.