Magnetoelectric Effect in Type II Multiferroic HoFeWO6

ORAL

Abstract

In type II multiferroics, the ferroelectricity originates from the magnetic ordering as it breaks the inversion symmetry. In this work, we investigated multiferroicity in HoFeWO6 which belongs to the RFeWO6 (R=Rare-earth) system recently suggested to be type II multiferroic [1]. We found that this compound orders antiferromagnetically below TN ~17 K. Observation of an anomaly in dielectric constant and dielectric loss, as well as a polarization switchable by an electric field at the same temperature, reveal the ferroelectric nature of this transition.
We further found that below the temperature TC2 ~5 K there appears a polarization (P2) in opposite direction of the (P1) at TC1 ~17 K. While external magnetic field suppresses the polarization in the first transition (P1), at a critical field HC1 ~1T we observe a flipping of the direction of P2. In addition, magnetic field dependent dielectric constant measurements show a magneto-dielectric effect of ~ 1.5% at 2 K for a critical field HC1 ~1T. The metamagnetic behavior at low temperature with similar critical field indicates their direct relationship and the field induced nature of this observation.
[1] S. Ghara, et al, Physical Review B, 95(22) 224416 (2017)

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Presenters

  • Moein Adnani Takantapeh

    Texas Center for Superconductivity and Department of Physics, University of Houston

Authors

  • Moein Adnani Takantapeh

    Texas Center for Superconductivity and Department of Physics, University of Houston

  • Hung-Cheng Wu

    Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204, Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, Texas Center for Superconductivity, University of Houston, Texas 77204, USA, Physics, Texas Center for Superconductivity at the University of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston

  • Narayan Poudel

    Idaho National Laboratory, Texas Center for Superconductivity and Department of Physics, University of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA

  • Melissa Gooch

    Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204, Physics, Texas Center for Superconductivity at the University of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston, The Texas Center for Superconductivity, University of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA

  • Liangzi Deng

    Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204, Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, Texas Center for Superconductivity, University of Houston, Texas 77204, USA, Physics, Texas Center for Superconductivity at the University of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston, The Texas Center for Superconductivity, University of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA

  • Zheng Wu

    Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204, Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, Texas Center for Superconductivity and Department of Physics, University of Houston, The Texas Center for Superconductivity, University of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA

  • Paul C. W. Chu

    Texas Center for Superconductivity, University of Houston, Texas 77204, USA, Texas Center for Superconductivity, University of Houston, Physics, Texas Center for Superconductivity at the University of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston