Magnetism-Driven Ferroelectricity in GdMn$_{2}$O$_{5}$

ORAL

Abstract

REMn$_{2}$O$_{5}$(RE=rare-earth) is one of the well-studied multiferroics which exhibits the reversible switching of ferroelectric polarization under the application of external magnetic fields. It is known that the ferroelectricity in REMn2O5 originates from the symmetric exchange interaction between Mn ions. However, the role of the rare-earth elements has never been elucidated. In order to reveal the full magnetic structure and the contribution of rare-earth magnetism to the ferroelectricity, we have studied the detailed magnetic and structural properties of high-quality single-crystalline GdMn$_{2}$O$_{5}$ (space group, Pbam). We have performed the resonant x-ray scMn$_{2}$O$_{5}$attering experiment, and comprehensive measurements of physical properties of the system, including magnetic susceptibility, dielectric constant and ferroelectric polarization with the variation of temperature and magnetic fields.

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Authors

  • Nara Lee

    Department of Physics and Astronomy and Rutgers Center for Emergent Materials, Rutgers University, Piscataway, New Jersey 08854, USA, Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA, Rutgers University, Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Rutgers Center for Emergent Materials and Dept of Phys and Astronomy, Rutgers U., NJ, USA, Department of Physics and Astronomy and Rutgers Center for emergent materials, Rutgers University, Piscataway, NJ 08854 USA

  • Young Jai Choi

    Yonsei University

  • C. Vecchini

    Diamond Light Source Ltd

  • L. C. Chapon

    Institut Laue Langevin, 6 rue Jules Horowitz, BP156, Grenoble Cedex 9, France, Institut Laue Langevin, Grenoble, France, Institut Laue-Langevin, France, Institut Laue Langevin, ISIS Facility, Rutherford Appleton Laboratory

  • P. G. Radaelli

    Oxford University, Clarendon Laboratory, Department of Physics, Oxford University, Oxford Physics

  • A. Bombardi

    Diamond Light Source Ltd, Diamond Ltd, Chilton, Oxford, United Kingdom

  • S-W. Cheong

    Rutgers Center for Emergent Materials, Rutgers University, Department of Physics and Astronomy and Rutgers Center for Emergent Materials, Rutgers University, Piscataway, New Jersey 08854, USA, Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA, Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Rutgers Center for Emergent Materials and Dept of Phys and Astronomy, Rutgers U., NJ, USA, Department of Physics and Astronomy and Rutgers Center for emergent materials, Rutgers University, Piscataway, NJ 08854 USA