Hyperfine fields and atomic repulsion in Fe based alloys

Abstract
NMR measurements on impurity sites in binary and ternary Fe based alloys are reported. Co sites with other impurity neighbours show hyperfine field changes compatible with known moment distributions around impurities. Mn spectra often show no satellites from sites with impurity neighbours. It is concluded that in these cases there are no Mn sites with impurity due to strong atomic repulsion.