Stability of the magnetoelectric state in Y-type hexaferrite single crystals

ORAL

Abstract

The magnetoelectric (ME) properties of the trigonal Y-type hexaferrites, Ba2-ySryCo2Fe12-xAlxO22, are related to the multiferroic FE3 phase [1,2]. Although this phase has been observed both as a metastable and as a stable phase [3,4,5], stable control over magnetization by electric field has not yet been achieved close to room temperature. This indicates that for applications, the stability of the multiferroic phase as well as the ME state are crucial issues, which are hard to investigate using conventional approaches.
In this presentation, we report the results of the direct (P-H) and inverse (M-E) magnetoelectric effects in Y-type hexaferrites with different Sr doping levels. Using the combination of high electric and magnetic fields, we investigate the isothermal switching between two ME states. We discuss these new findings in terms of a possible way to evaluate the stability of the ME state in multiferroic materials.

[1] T. Kimura, Ann. Rev. Condens. Matter Phys. 3, 93-110 (2012)
[2] T. Kimura et. al., PRL 94, 137201 (2005)
[3] S. Hirose et. al., APL 104, 022907 (2014)
[4] T. Nakajima et. al., PRB 94 195154 (2016)
[5] V. Kocsis et. al., Nat. Comm. 10, 1247 (2019)

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Presenters

  • Vilmos Kocsis

    • RIKEN
    • Center for Emergent Matter Science (CEMS), RIKEN, Japan
    • Department of Physics, Budapest University of Technology and Economics, Hungary
    • Leibniz Institute for Solid State and Materials Research Dresden
    • RIKEN CEMS

Authors

  • Vilmos Kocsis

    • RIKEN
    • Center for Emergent Matter Science (CEMS), RIKEN, Japan
    • Department of Physics, Budapest University of Technology and Economics, Hungary
    • Leibniz Institute for Solid State and Materials Research Dresden
    • RIKEN CEMS

  • Taro Nakajima

    • RIKEN
    • RIKEN Center for Emergent Matter Science

  • Masaaki Matsuda

    • Neutron Scattering Division, Oak Ridge National Laboratory
    • Oak Ridge National Laboratory
    • Oak Ridge National Lab

  • Akiko Kikkawa

    • RIKEN

  • Yoshio Kaneko

    • RIKEN
    • Center for Emergent Matter Science (CEMS), RIKEN
    • RIKEN CEMS

  • Junya Takashima

    • RIKEN

  • Kazuhisa Kakurai

    • Comprehensive Research Organization for Science and Society (CROSS)

  • Taka-hisa Arima

    • Department of Advanced Materials Science, University of Tokyo
    • RIKEN CEMS and University of Tokyo
    • Univ of Tokyo-Kashiwanoha
    • Department of Advanced Material Science, The University of Tokyo

  • Yusuke Tokunaga

    • RIKEN
    • Center for Emergent Matter Science (CEMS), RIKEN, Japan
    • Department of Advanced Materials Science, University of Tokyo
    • Univ of Tokyo-Kashiwanoha

  • Yoshinori Tokura

    • RIKEN
    • Center for Emergent Matter Science (CEMS), RIKEN, Japan
    • CEMS, RIKEN
    • RIKEN CEMS and University of Tokyo
    • Center for Emergent Matter Science (CEMS), RIKEN
    • RIKEN CEMS
    • Department of Applied Physics, The University of Tokyo
    • The University of Tokyo
    • Center for Emergent Matter Science, RIKEN
    • RIKEN Center for Emergent Matter Science

  • Yasujiro Taguchi

    • RIKEN
    • Center for Emergent Matter Science (CEMS), RIKEN, Japan
    • RIKEN CEMS