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

Author information

Eigo Kobayashi
University of Yamanashi
Shintaro Ueno
University of Yamanashi
Kouichi Nakashima
University of Yamanashi
Nobuhiro Kumada
University of Yamanashi
Tohru S. Suzuki
National Institute for Materials Science
Tetsuo Uchikoshi
National Institute for Materials Science
Yoshio Sakka
National Institute for Materials Science
Yasunari Miwa
Murata Manufacturing Co., Ltd.
Shinichiro Kawada
Murata Manufacturing Co., Ltd.
Suetake Omiya
Murata Manufacturing Co., Ltd.
Noriyuki Kubodera
Murata Manufacturing Co., Ltd.
Ichiro Fujii
Ryukoku University
Satoshi Wada
University of Yamanashi

Keywords: ferroelectric, barium titanate, grain-orientation, electrophoretic deposition, magnetic orientation

JOURNAL FREE ACCESS

2014 Volume 39 Issue 2 Pages 199-202

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

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Abstract

(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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