Magnetic Structures of Iron Sulphide.

DOI Web Site 19 References
  • Marshall W. G.
    Department of Physics and Astronomy, The University of Edinburgh
  • Loveday J. S.
    Department of Physics and Astronomy, The University of Edinburgh
  • Nelmes R. J.
    Department of Physics and Astronomy, The University of Edinburgh
  • Klotz S.
    Physique des Milieux Condensés, Université Pierre et Marie Curie
  • Hamel G.
    Département des Hautes Pressions, Université Pierre et Marie Curie
  • Besson J. M.
    Physique des Milieux Condensés, Université Pierre et Marie Curie
  • Parise J. B.
    CHiPR and Department of Earth and Space Sciences

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Abstract

The results of the first high-pressure neutron powder diffraction study of FeS, using the Paris-Edinburgh cell for sample pressure generation, are reported. Excellent agreement is obtained between the present and previously published troilite nuclear and magnetic structures. Data collected at 4. 0 GPa for the MnP-type FeS phase II show that the transition to this phase is accompanied by a 90° magnetic moment reorientation, just as seen for FeS for T>Ts∼450 K at ambient pressure. The neutron data collected for the monoclinic FeS phase III at 9. 0 GPa confirms a recent X-ray structure solution for this phase and the loss of magnetic order reported in 57Fe Mössbauer studies.

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