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Giant magnetoelectric effects achieved by tuning spin cone symmetry in Y-type hexaferrites

Author

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  • Kun Zhai

    (Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yan Wu

    (Oak Ridge National Laboratory)

  • Shipeng Shen

    (Institute of Physics, Chinese Academy of Sciences)

  • Wei Tian

    (Oak Ridge National Laboratory)

  • Huibo Cao

    (Oak Ridge National Laboratory)

  • Yisheng Chai

    (Institute of Physics, Chinese Academy of Sciences)

  • Bryan C. Chakoumakos

    (Oak Ridge National Laboratory)

  • Dashan Shang

    (Institute of Physics, Chinese Academy of Sciences)

  • Liqin Yan

    (Institute of Physics, Chinese Academy of Sciences)

  • Fangwei Wang

    (Institute of Physics, Chinese Academy of Sciences)

  • Young Sun

    (Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Multiferroics materials, which exhibit coupled magnetic and ferroelectric properties, have attracted tremendous research interest because of their potential in constructing next-generation multifunctional devices. The application of single-phase multiferroics is currently limited by their usually small magnetoelectric effects. Here, we report the realization of giant magnetoelectric effects in a Y-type hexaferrite Ba0.4Sr1.6Mg2Fe12O22 single crystal, which exhibits record-breaking direct and converse magnetoelectric coefficients and a large electric-field-reversed magnetization. We have uncovered the origin of the giant magnetoelectric effects by a systematic study in the Ba2-x Sr x Mg2Fe12O22 family with magnetization, ferroelectricity and neutron diffraction measurements. With the transverse spin cone symmetry restricted to be two-fold, the one-step sharp magnetization reversal is realized and giant magnetoelectric coefficients are achieved. Our study reveals that tuning magnetic symmetry is an effective route to enhance the magnetoelectric effects also in multiferroic hexaferrites.

Suggested Citation

  • Kun Zhai & Yan Wu & Shipeng Shen & Wei Tian & Huibo Cao & Yisheng Chai & Bryan C. Chakoumakos & Dashan Shang & Liqin Yan & Fangwei Wang & Young Sun, 2017. "Giant magnetoelectric effects achieved by tuning spin cone symmetry in Y-type hexaferrites," Nature Communications, Nature, vol. 8(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00637-x
    DOI: 10.1038/s41467-017-00637-x
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