We report on new analytical techniques applied to the ${}_{}{}^{57}{}_{}{}^{}\mathrm{Fe}$ Mössbauer spectra of the alloy Au-16.8 at. % Fe showing a magnetic double transition. With analysis of the effect of the electric-quadrupole hyperfine interaction on the spectra, it can be shown even from spectra in zero external magnetic field that the transition at T${̃}_f$ is a spin-canting transition.

• Received 20 August 1984

DOI:https://doi.org/10.1103/PhysRevB.31.1630