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

Igor Presniakov (1) , V. S. Rusakov (1) , T. V. Gubaidulina (1) , Alexey Sobolev (1) , Alexey Baranov (1, 2) , Gérard Demazeau (2) , O. S. Volkova (1, 3) , V. M. Cherepanov (4) , E. A. Goodilin (1)

1 Chair of Radiochemistry, Department of Chemistry
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
3 Institute of Radiotechnics and Electronics
4 NRC KI - National Research Center "Kurchatov Institute"

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...

Mots clés: CaMn7O12; Electronic phenomena; Mössbauer spectroscopy

Domaines: Matériaux

Igor Presniakov, V. S. Rusakov, T. V. Gubaidulina, Alexey Sobolev, Alexey Baranov, et al.. Investigation of the manganite CaMn7O12 through 57Fe probe Mössbauer spectroscopy in two different temperature domains. Solid State Communications, 2007, 142 (9), pp.509-514. ⟨10.1016/j.ssc.2007.03.042⟩. ⟨hal-00146256⟩