Evidence of a new structural phase of manganese-iron oxide |
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| Authors: | B Kolk A Albers G R Hearne H Le Roux |
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| Institution: | (1) Physics Department and Condensed Matter Physics Research Group, University of the Witwatersrand, Johannesburg, RSA |
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| Abstract: | Coprecipitation of manganese and iron followed by calcination at temperatures below 500°C results in a new structural phase
for the Mn−Fe−O system: a non-stoichiometric spinel with, in every three unit cells, one metal atom missing. About 57% of
the iron in this spinel has the composition γMnFeO3 which is paramagnetic at room temperature. The remaining 43% of the iron has the composition MnyFe2-yO3 with y∼0.16 which is magnetic at room temperature. |
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