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    Circularly polarized soft x-ray diffraction study of helical magnetism in hexaferrite

    Access Status
    Fulltext not available
    Authors
    Mulders, Anna
    Lawrence, S
    Princep, Andrew
    Staub, U.
    Bodenthin, Y.
    Garcia-Fernandez, M.
    Garganourakis, M.
    Hester, J.
    Macquart, R.
    Ling, C.
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Mulders, A. and Lawrence, S. and Princep, A. and Staub, U. and Bodenthin, Y. and Garcia-Fernandez, M. and Garganourakis, M. et al. 2010. Circularly polarized soft x-ray diffraction study of helical magnetism in hexaferrite. Physical Review B.. 81 (9): pp. 092405:1-082405:4.
    Source Title
    Physical Review B.
    DOI
    10.1103/PhysRevB.81.092405
    ISSN
    10980121
    School
    Department of Physics and Astronomy
    URI
    http://hdl.handle.net/20.500.11937/28474
    Collection
    • Curtin Research Publications
    Abstract

    Magnetic spiral structures can exhibit ferroelectric moments as recently demonstrated in various multiferroic materials. In such cases the helicity of the magnetic spiral is directly correlated with the direction of the ferroelectric moment and measurement of the helicity of magnetic structures is of current interest. Soft x-ray resonant diffraction is particularly advantageous because it combines element selectivity with a large magnetic cross-section. We calculate the polarization dependence of the resonant magnetic x-ray cross-section (electric dipole transition) for the basal plane magnetic spiral in hexaferrite Ba0.8Sr1.2Zn2Fe12O22 and deduce its domain population using circular polarized incident radiation. We demonstrate there is a direct correlation between the diffracted radiation and the helicity of the magnetic spiral.

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