Аннотация:The results of a Mössbauer study of hyperfine interactions of 57Fe probe nuclei in isostructural hexagonal manganites h-ScMnO3 and h-InMnO3 are presented. The results of measurements of the Mössbauer spectra at T > TN, as well as calculations of the parameters of the electric field gradient tensor at 57Fe nuclei, demonstrated different behavior of the probe iron ions in these isostructural systems, reflecting the differencein the processes of defect formation in their crystal lattices. On the contrary, measurements at T < TN did not reveal any differences in the local magnetic structure of 57Fe probe atoms in these oxides.
