Magnetic X-ray scattering in multiferroic HoMn2O5

ORAL

Abstract

The commensurate magnetic phase of multiferroic HoMn2O5 has been studied by x-ray magnetic scattering off resonance and at the L3 edge of Holmium. The magnetic ordering of the Manganese ions below 40 K induces a magnetic order of Ho. Due to the element selectivity of the technique we were able to extract the temperature dependence of the Ho ordering up to temperature very close to TN. Azimuthal scans confirm the recent model of the magnetic structure determined from single crystal neutron diffraction data, for both the Manganese and Holmium ions. The d-f coupling is discussed in the light of these results.

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Authors

  • Laurent Chapon

    • ISIS Facility, Rutherford Appleton Laboratory
    • ISIS, Rutherford Appleton Laboratory
    • ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, UK
    • ISIS Facility, STFC-RAL, Didcot,OX110QX, UK

  • Guillaume Beutier

    • Diamond Light Source, Rutherford Appleton Laboratory

  • Alessandro Bombardi

    • Diamond Light Source, Rutherford Appleton Laboratory

  • Carlo Vecchini

    • ISIS, Rutherford Appleton Laboratory

  • Paolo Radaelli

    • ISIS, Rutherford Appleton Laboratory

  • S. Park

    • Rutgers University

  • Sang-Wook Cheong

    • Rutgers University