57Fe Mossbauer spectroscopic examination of a single crystal of Fe3O4

Fe-57 Mossbauer spectra have been recorded in fields of up to 13 T from a single crystal of Fe3O4 cut perpendicular to the [111] axis. The spectra were best fitted with five magnetic components complementing studies on a crystal cut normal to a [100] axis. One component corresponds to Fe3+ situated on the tetrahedral A sites of the inverse spinel-related structure whilst the other four correspond to Fe3+ and Fe2+ on two non-equivalent octahedral sites.