Speaker
Mbela Kalengay
(School of Physics, University of KwaZulu-Natal, Durban 4000, South Africa)
Description
We have investigated single phase formation in a series of (Sn, Mn)0.2Cr1.8-xFexO3 produced by low temperature synthesis based on hydrothermal process in a reflux system and in a stirred pressure reactor. The evolution of the properties is investigated by X-ray diffraction (XRD) and by magnetic measurements. Evidence of successful Sn or Mn incorporation into the corundum structure is obtained. 57Fe Mössbauer spectra show the materials to be paramagnetic for Fe concentration x ≤ 0.5 and in ordered magnetic state at higher concentration. Rietveld structure refinement of the XRD spectra is employed in the analysis.
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Primary author
Mbela Kalengay
(School of Physics, University of KwaZulu-Natal, Durban 4000, South Africa)
Co-authors
J. Z. Msomi
(Department of Physics, University of Free State, P/Bag X13, Phuthaditjhaba 9866, South Africa)
T Moyo
(School of Physics, University of KwaZulu-Natal, Durban 4000, South Africa)
