A magnetic and Mössbauer study of magnetic ordering and vacancy clustering in Cu5FeS4

Magnetic susceptibilities and Mössbauer spectra recorded at temperatures between 4° and 300°K show that the low temperature form of Cu5FeS4, bornite, orders magnetically at 76±2°K. At a lower temperature 8°K a second magnetic phase transition occurs. The Mössbauer spectra suggest that there is signi...

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Bibliographic Details
Published in:The Journal of physics and chemistry of solids 1977, Vol.38 (10), p.1153-1159
Main Authors: Townsend, M.G., Gosselin, J.R., Tremblay, R.J., Ripley, L.G., Carson, D.W., Muir, W.B.
Format: Article
Language:English
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Summary:Magnetic susceptibilities and Mössbauer spectra recorded at temperatures between 4° and 300°K show that the low temperature form of Cu5FeS4, bornite, orders magnetically at 76±2°K. At a lower temperature 8°K a second magnetic phase transition occurs. The Mössbauer spectra suggest that there is significant partial disordering of cations and vacancies in tetrahedral holes of the face-centred cubic sulphur lattice. Thermoelectric power measurements indicate that bornite is a p-type semiconductor. For a three dimensional magnetic superexchange interaction between Fe(III) atoms a small super-transferred spin density would be required on intermediate Cu(I) atoms.
ISSN:0022-3697
1879-2553
DOI:10.1016/0022-3697(77)90043-9