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Ferroelectricity from iron valence ordering in the charge-frustrated system LuFe2O4

Author

Listed:
  • Naoshi Ikeda

    (Japan Synchrotron Radiation Research Institute)

  • Hiroyuki Ohsumi

    (Japan Synchrotron Radiation Research Institute)

  • Kenji Ohwada

    (Japan Atomic Energy Research Institute)

  • Kenji Ishii

    (Japan Atomic Energy Research Institute)

  • Toshiya Inami

    (Japan Atomic Energy Research Institute)

  • Kazuhisa Kakurai

    (Japan Atomic Energy Research Institute)

  • Youichi Murakami

    (Tohoku University)

  • Kenji Yoshii

    (Japan Atomic Energy Research Institute)

  • Shigeo Mori

    (Osaka Prefecture University)

  • Yoichi Horibe

    (Osaka Prefecture University)

  • Hijiri Kitô

    (National Institute of Advanced Industrial Science and Technology)

Abstract

In control Ferroelectric materials have a spontaneous electric polarization and are widely used in electronic devices including memories. Conventional ferroelectricity arises from ionic displacement, but an alternative mechanism has been proposed based on ordered electrons. Evidence for the latter behaviour has now been found in a mixed valence oxide. This type of ferroelectricity may offer potential for devices with enhanced controllability.

Suggested Citation

  • Naoshi Ikeda & Hiroyuki Ohsumi & Kenji Ohwada & Kenji Ishii & Toshiya Inami & Kazuhisa Kakurai & Youichi Murakami & Kenji Yoshii & Shigeo Mori & Yoichi Horibe & Hijiri Kitô, 2005. "Ferroelectricity from iron valence ordering in the charge-frustrated system LuFe2O4," Nature, Nature, vol. 436(7054), pages 1136-1138, August.
    • Handle: RePEc:nat:nature:v:436:y:2005:i:7054:d:10.1038_nature04039
    DOI: 10.1038/nature04039
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