Based on experimental data it is shown, for some chosen alloys and compounds of iron, that there is no one unique relationship between the 57Fe-site magnetic hyperfine field, Bhf, and the magnetic moment per Fe atom, m. Instead, the Bhf-m plot consists of several branches, each of them being characteristic of a given alloy or compound. Consequently, the effective proportionality constant (hyperfine coupling constant) depends on the alloy system or compound, and for a given alloy system or compound it depends on the composition or even on the lattice site. Consequently, the scaling of Bhf into the underlying m cannot be done a priopri.
@article{arxiv.0812.0671,
title = {Relationship between the magnetic hyperfine field and the magnetic moment},
author = {S. M. Dubiel},
journal= {arXiv preprint arXiv:0812.0671},
year = {2010}
}