Electric field control of magnetic domains in Y-type hexaferrite single crystals at room temperature

ORAL

Abstract

In the trigonal Y-type hexaferrites the magnetoelectric properties are attributed to the emergence of the so-called FE3 phase with co-existing ferrimagnetic and ferroelectric orders [1]. Recently, in the Al-doped Y-type hexaferrite, (Ba,Sr)2Co2Fe11AlO22, this multiferroic phase has been observed as a metastable phase close to room temperatures even in the absence of magnetic field [2,3].
In this presentation we report that in bulk Ba0.8Sr1.2Co2Fe12-xAlxO22 with x=0.9, the ferrimagnetic and ferroelectric domains have considerable coupling even at room temperature. Cross-control of the magnetic and electric degrees of freedoms, i.e. the direct (P-H) and inverse (M-E) magnetoelectric effect have been observed up to room temperature. Using magnetic force microscopy, control of the magnetic domain pattern by the application of electric field is directly visualized. We demonstrate that magnetization switching is realized via the propagation of two kinds of domain walls; parallel and perpendicular to the applied electric field.
[1] T. Kimura, Ann. Rev. Condens. Matter Phys. 3, 93-110 (2012).
[2] S. Hirose et. al., APL 104, 022907 (2014).
[3] T. Nakajima et. al., PRB 94 195154 (2016).

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Presenters

  • Vilmos Kocsis

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

Authors

  • Vilmos Kocsis

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

  • Taro Nakajima

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

  • Masaaki Matsuda

    • Neutron Sciences Directorate, Oak Ridge National Laboratory
    • Oak Ridge National Laboratory
    • Neutron Science Directorate, Oak Ridge National Laboratory
    • Oak Ridge National Lab

  • Akiko Kikkawa

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

  • Yoshio Kaneko

    • Center for Emergent Matter Science (CEMS), RIKEN

  • Junya Takashima

    • Center for Emergent Matter Science (CEMS), RIKEN

  • Kazuhisa Kakurai

    • CROSS
    • Comprehensive Research Organization for Science and Society (CROSS)
    • Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society

  • Taka-hisa Arima

    • GSFS, University of Tokyo
    • University of Tokyo
    • Graduate School of Frontier Sciences, The University of Tokyo

  • Fumitaka Kagawa

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

  • Yusuke Tokunaga

    • RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan
    • University of Tokyo

  • Yoshinori Tokura

    • RIKEN Center for Emergent Matter Science (CEMS)
    • RIKEN Center for Emergent Matter Science
    • RIKEN CEMS
    • RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan
    • Center for Emergent Matter Science (CEMS), RIKEN
    • Department of Applied Physics and Quantum-Phase Electronics Center, University of Tokyo
    • University of Tokyo
    • University of Tokyo and RIKEN CEMS
    • CEMS, RIKEN
    • Center for Emergent Matter Science, RIKEN
    • Department of Applied Physics, University of Tokyo
    • University of Tokyo and RIKEN-CEMS

  • Yasujiro Taguchi

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