Hyperfine interactions in the anisotropic layer compound FeOCl from57Fe Mössbauer studies

Peculiarities of heating-induced transformations in Fe(III) β-oxyhydroxides

“…8b). The positions of Fe in these samples can be hardly attributed to the stoichiometric FeOCl and FeOF because Neel temperature (T N ) 90 K for FeOCl [34] and T N 315 K for FeOF [35]. T N slightly higher than the one characteristic to stoichiometric FeOF, led to conclusion that the composition of intermediate phase of transformed b-FeOOH,F is close to nonstoichiometric FeOF.…”