Variable temperature powder neutron diffraction study of the Verwey transition in magnetite Fe3O4

WRIGHT, John P., BELL, Anthony M.T. and ATTFIELD, J. Paul (2000). Variable temperature powder neutron diffraction study of the Verwey transition in magnetite Fe3O4. Solid State Sciences, 2 (8), 747-753.

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Official URL: http://www.journals.elsevier.com/solid-state-scien...
Link to published version:: https://doi.org/10.1016/S1293-2558(00)01107-9
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    Abstract

    Neutron powder diffraction data have been collected from a sample of polycrystalline Fe3O4. High resolution data collected at 60 K are fitted using a simple rhombohedral distortion of the cubic unit cell. This model accounts for all of the peak splittings that occur upon cooling through the Verwey transition temperature (TV). Lower resolution data collected between 2 and 280 K are fitted using the same model, which gives TV = 110 +- 5 K. These data show a change in the thermal expansion due to the softening of phonons above TV and a change in crystallite extinction arising from twinning at the transition.

    Item Type: Article
    Identification Number: https://doi.org/10.1016/S1293-2558(00)01107-9
    Page Range: 747-753
    Depositing User: Anthony Bell
    Date Deposited: 28 Jul 2016 13:42
    Last Modified: 18 Mar 2021 22:45
    URI: http://shura.shu.ac.uk/id/eprint/12764

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