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Title: Circularly polarized soft x-ray diffraction study of helical magnetism in hexaferrite
Authors: Mulders, AM
Lawrence, SM
Princep, AJ
Staub, U
Bodenthin, Y
García-Fernández, M
Garganourakis, M
Hester, JR
Macquart, RB
Ling, CD
Keywords: X-ray diffraction
Spiral configuration
Cross sections
Issue Date: 1-Mar-2010
Publisher: American Physical Society
Citation: Mulders, A. M., Lawrence, S. M., Princep, A. J., Staub, U., Bodenthin, Y., García-Fernández, M., Garganourakis, M., Hester, J., Macquart, R., & Ling, C. D. (2010). Circularly polarized soft x-ray diffraction study of helical magnetism in hexaferrite. Physical Review B, 81(9), 4. doi:10.1103/PhysRevB.81.092405
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. © 2010, American Physical Society
Gov't Doc #: 1621
ISSN: 1098-0121
Appears in Collections:Journal Articles

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