Magnetocapacitance Effect and Magnetoelectric Coupling in Type-II Multiferroics RFeWO<sub>6</sub> (R=Ho, Dy and Tb)

ORAL

Abstract

In this work, we investigated the multiferroic property and magnetoelectric (ME) coupling in HoFeWO6 with a noncentrosymmetric polar structure (space group Pna21). Low temperature XRD measurements down to 8 K did not show a structural phase transition and our DFT calculations reveal a stable structure. With an antiferromagnetic transition at TN=17.8 K and a ferroelectric transition with the onset at the same temperature, this compound is a type-II multiferroic which shows magnetoelectric (ME) coupling. Field-dependent dielectric measurements show magnetocapacitance (MC) effect with double hysteresis loop at low temperature, which is directly related to its metamagnetic behavior. We further studied the MC effect in other members of this family, in particular, DyFeWO6 and TbFeWO6 and compared the results with HoFeWO6. The observed MC effect and its direct correspondence with magnetization further confirm the ME coupling in these compounds.

*The work performed at Houston is supported by USAFOSR Grant FA9550-15-1-0236, TLL Temple Foundation, JJ&R Moores Endowment, and State of Texas through TCSUH.

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Presenters

  • Moein Adnani Takantapeh

    • Texas Center for Superconductivity, University of Houston

Authors

  • Moein Adnani Takantapeh

    • Texas Center for Superconductivity, University of Houston

  • Melissa Gooch

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

  • Narayan Poudel

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

  • Hung-Cheng Wu

    • Physics, National Sun Yat-sen University
    • Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA
    • Texas Center for Superconductivity, University of Houston
    • Department of Physics, National Sun Yat-sen University
    • Department of Physics, National Sun Yat-sen University, Kaohsiung 804, Taiwan
    • Natl Sun Yat Sen Univ
    • Texas Center for Superconductivity and Physics Department at the Univ of Houston

  • Liangzi Deng

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

  • Zheng Wu

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

  • Chung-Kai Chang

    • National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
    • National Synchrotron Radiation Research Center, Taiwan
    • National Synchrotron Radiation Research Center
    • National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

  • Taha Salavati-fard

    • Department of Chemical and Biomolecular Engineering, University of Houston

  • Yen-Chung Lai

    • National Synchrotron Radiation Research Center, Taiwan
    • National Synchrotron Radiation Research Center

  • Hung-Duen Yang

    • Physics, National Sun Yat-sen University
    • Department of Physics, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
    • Department of Physics, National Sun Yat-sen University
    • Department of Physics, National Sun Yat-sen University, Kaohsiung 804, Taiwan
    • Natl Sun Yat Sen Univ
    • Department of Physics, National Sun Yat-sen University, Taiwan

  • Lars C. Grabow

    • Department of Chemical and Biomolecular Engineering, University of Houston

  • Paul C. W. Chu

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