Ti-O Hybridization Effect on Ferroelectric Phase Transition of BaTiO3.

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  • Higuchi Tohru
    Department of Applied Physics, Science University of Tokyo, 1–3 Kagurazaka, Shinjuku, Tokyo 162–0825, Japan
  • Tsukamoto Takeyo
    Department of Applied Physics, Science University of Tokyo, 1–3 Kagurazaka, Shinjuku, Tokyo 162–0825, Japan
  • Oka Kunihiko
    Electrotechnical Laboratory, 1–1–4 Umezono, Tsukuba 305–0001, Japan
  • Yokoya Takayoshi
    Institute for Solid State Physics, University of Tokyo, 7–22–1 Roppongi, Minato–ku, Tokyo 106–8666, Japan
  • Tezuka Yasuhisa
    Institute for Solid State Physics, University of Tokyo, 7–22–1 Roppongi, Minato–ku, Tokyo 106–8666, Japan
  • Shin Shik
    Institute for Solid State Physics, University of Tokyo, 7–22–1 Roppongi, Minato–ku, Tokyo 106–8666, Japan

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  • Ti–O Hybridization Effect on Ferroelectric Phase Transition of BaTiO<sub>3</sub>

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Abstract

The Ti-O hybridization effect on the ferroelectric phase transition of BaTiO3 has been studied by resonant-photoemission spectroscopy. The Ti 3d partial-density-of-state in the valence band of the paraelectric phase is larger than that of the ferroelectric phase. This fact indicates that the Ti-O hybridization effect is stronger in the paraelectric phase.

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