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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)

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