Observation of skyrmion-like magnetism in multiferroic BiMnO3

POSTER

Abstract

Polycrystalline sample BiMnO3 was synthesized at high-pressure and temperature and characterized by X-ray diffraction. In our previous reports [1, 2], the multiple magnetic anomalous transitions have been investigated under a hydrostatic pressure up to 11.9 kbar, where the interesting magnetic H-T phase diagrams were also established. In this study, we revisit the pressure effect on the magnetic properties in BiMnO3, particularly in low magnetic field region. Interestingly, a pressure induced skyrmion-like A phase was observed in low magnetic field. The striking and unexpected observation of skyrmion-like phase in BiMnO3 will be discussed.

References:
[1] C. C. Chu et al., Anomalous pressure effect on the magnetic ordering in multiferroic BiMnO3, PHYSICAL REVIEW B 78, 092404 (2008)
[2] C. C. Chu et al., Multiple magnetic transitions in multiferroic BiMnO3, PHYSICAL REVIEW B 80, 184426 (2009)

*MOST:106-2112-M-110 -013 -MY3

Presenters

  • Zong-Heng Yang

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

Authors

  • Zong-Heng Yang

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

  • 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

  • Ting-Wei Kuo

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

  • 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

  • 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

  • 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

  • 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