57Fe Mössbauer Spectroscopy as a Tool for Study of Spin States and Magnetic Interactions in Inorganic Chemistry

In this mini-review of our research group’s activity, the application of 57Fe Mössbauer spectroscopy in studies of electronic structure, coordination environment, and magnetic interactions in an interesting series of Fe(II/III) compounds selected is discussed. We selected two prominent phenomena that arose during investigations of selected groups of compounds carried out at different periods of time: (1) very high magnetic hyperfine fields observed at low temperatures; (2) changes in the oxidation state of the central iron atom of complexes in the solid state during interactions with gaseous O2/H2O mixtures, resulting in spin crossover (SCO).

Electronic and magnetic states of Fe ions in the Co2FeBO5

The ludwigite Co2FeBO5 has been studied experimentally using 57Fe Mössbauer spectroscopy and theoretically by means of the DFT+GGA calculations. The room-temperature Mössbauer spectra are composed of four quadrupole doublets corresponding...

Magnetic structures of Fe32+δGe33As2 and Fe32+δ′Ge35−xPx intermetallic compounds: a neutron diffraction and 57Fe Mössbauer spectroscopy study

Fe32.1Ge33As2 and Fe32.5Ge32P3 demonstrate complex commensurate antiferromagnetic ordering below 125 K accompanied by a spin reorientation upon further cooling.