Investigation of the manganite CaMn7O12 through 57Fe probe Mössbauer spectroscopy in two different temperature domains

Mössbauer studies of 57Fe-doped CaMn7O12 have been carried out over two paramagnetic ranges of temperature. The observed hyperfine parameters of 57Fe spectra were discussed assuming that Fe3+ cations are mainly substituted for manganese cations in six-coordinated oxygen polyhedra. In the first temperature range 90K