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Observations of antiferromagnetic, antiferroelectric and ferroelastic orderings in honeycomb-lattice Mn<sub>2</sub>V<sub>2</sub>O<sub>7</sub>

ORAL

Abstract

The dielectric and magnetic anomalies were observed in Mn2V2O7 between 275 K and 300 K. Isothermal capacitance-stress hysteresis loop measurements along with crystallographic Aizu notation supported a martensitic phase transition (TM) driven ferroelastic behavior near room temperature. Another dielectric anomaly was also observed near the long-range antiferromagnetic (AFM) ordering temperature (TN ~ 16.4 K) along with noticeable magnetodielectric (MD) coupling below TN, signifying the multiferroic nature of Mn2V2O7. With increasing pressure, the antiferromagnetic ordering (TN) greatly increased, while the (TM) was suppressed. Taking all of these comprehensive research findings into account, we suggest that Mn2V2O7 is a unique multifunctional material with the coexistence of antiferromagnetic, antiferroelectric and ferroelastic orderings.

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Presenters

  • 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

Authors

  • 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

  • Dong-Jie Hsieh

    Department of Physics, National Sun Yat-sen University

  • Tsung-Wen Yen

    Department of Physics, National Sun Yat-sen University

  • Po-Jung Sun

    Department of Physics, National Sun Yat-sen University

  • D. Chandrasekhar Kakarla

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

  • Jim-Long Her

    Division of Natural Science, Center for General Education, Chang Gung University

  • Y. H. Matsuda

    University of Tokyo, Univ. of Tokyo, Institute for Solid State Physics, University of Tokyo

  • 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

  • Yu-Chun Chuang

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

  • Yen-Chung Lai

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

  • 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

  • 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

  • Kyle Grant Webber

    Department of Materials Science and Engineering, Friedrich-Alexander Universität Erlangen-Nürnberg

  • Ching (Paul) W Chu

    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, University of Houston, Texas, Texas Center for Superconductivity, University of Houston, Univ of Houston