Sep 12 – 17, 2010
CERN
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Tin, Manganese doped chromium iron oxides of composition alpha-Sn_0.2Cr_1.8-xFe_xO_3 and alpha-Mn_0.2Cr_1.8-xFe_xO_3

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500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

CH - 1211 Geneva 23 Switzerland
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POSTER Magnetism and Magnetic materials - Bulk and thin layers

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)

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