Fabrication of Textured Ceramics Using Mn and Nb-doped Hexagonal BaTiO3 by an Electrophoretic Deposition in a High Magnetic Field

Eigo Kobayashi; Shintaro Ueno; Kouichi Nakashima; Nobuhiro Kumada; Tohru S. Suzuki; Tetsuo Uchikoshi; Yoshio Sakka; Yasunari Miwa; Shinichiro Kawada; Suetake Omiya; Noriyuki Kubodera; Ichiro Fujii; Satoshi Wada

doi:10.14723/tmrsj.39.199

Regular Papers

Fabrication of Textured Ceramics Using Mn and Nb-doped Hexagonal BaTiO₃ by an Electrophoretic Deposition in a High Magnetic Field

Eigo Kobayashi, Shintaro Ueno, Kouichi Nakashima, Nobuhiro Kumada, Tohru S. Suzuki, Tetsuo Uchikoshi, Yoshio Sakka, Yasunari Miwa, Shinichiro Kawada, Suetake Omiya, Noriyuki Kubodera, Ichiro Fujii, Satoshi Wada

著者情報

キーワード: ferroelectric, barium titanate, grain-orientation, electrophoretic deposition, magnetic orientation

ジャーナルフリー

2014 年 39 巻 2 号 p. 199-202

DOI https://doi.org/10.14723/tmrsj.39.199

詳細

抄録

(111)-oriented Mn and Nb-doped barium titanate (BaTiO₃, BT) ceramics with fine grains were fabricated with an electrophoretic deposition (EPD) method in a high magnetic field and a topotactic phase transition. Initially, accumulations of (0001)-oriented hexagonal Ba(Ti_0.95Mn_0.05)O₃ particles added with 2.5 mol%-Nb₂O₅ powder were prepared by the EPD method in the high magnetic field of 12 T. Then, the (111)-oriented, Mn and Nb-doped pseudo-cubic BT ceramics with fine grains of ～0.4 µm in diameter were obtained via the topotactic phase transition, with the degree of the (111) orientation being as high as 79 %. The piezoelectric properties of the oriented ceramics were also studied.

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