Spin-flip and magnetoelectric coupling in acentric and non-polar Pb<sub>2</sub>MnO<sub>4</sub>

POSTER

Abstract

Acentric and non-polar Pb2MnO4 was predicted to exhibit unique multipiezo induced magnetoelectric (ME) phenomena [1]. Here, we present the results of measurements from magnetization as well as the dielectric, as a function of temperature (T), magnetic field (H), pressure (P), and electric field (E) primarily to address the ME coupling and identify the underlying mechanism behind this phenomenon. Magnetization measurements reveal the antiferromagnetic (AFM) ordering of Mn4+ spins at TN = 17 K. For TN 17 K, a robustly multiple partial spin-flip transitions were also observed. The existence of ME coupling is supported by the observed dielectric anomaly near TN. The lattice dielectric response is strongly influenced by spin-flip transitions that trigger the pronounced ME coupling below the TN. The magnetic-field-induced ME phenomenon in Pb2MnO4 has been ascribed to the strong coupling of lattice polarization with the magnetic interactions and thereby offers a route to attain novel ME materials.

[1] S.A.J. Kimber, J.P. Attfield, Magnetic order in acentric Pb2MnO4, J. Mater. Chem., 17 (2007) 4885-4888

*This work was supported by the Ministry of Science and Technology, Taiwan, under Grant No. MOST: 106 – 2112 – M – 110 – 013 – MY3. Author thanks the NSRRC during the XAS measurements

Presenters

  • Hung-Duen Yang

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

Authors

  • Hung-Duen Yang

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

  • D Chandrasekhar Kakarla

    • National Sun Yat-sen University
    • Center of Crystal Research, National Sun Yat-sen University, Kaohsiung, 804 Taiwan
    • Center of Crystal Research, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan

  • 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

  • Dong-Jie Hsieh

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

  • Po-Jung Sun

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

  • Jiunn-Yuan Lin

    • Institute of Physics, National Chiao Tung University

  • JimLong Her

    • Division of Natural Science, Chang Gung University, Tao-Yuan 333, Taiwan

  • Yasuhiro H. Matsuda

    • Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan

  • 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

  • Gooch Melissa

    • Texas Center for Superconductivity, University of Houston, Texas 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