Dielectric, Ferroelectric and Piezoelectric Properties of Barium Titanate and  Bismuth Potassium Titanate Solid-Solution Ceramics

Yuji HIRUMA; Hajime NAGATA; Tadashi TAKENAKA

doi:10.14852/jcersjsuppl.112.0.S1125.0

Journal of the Ceramic Society of Japan, Supplement 112-1, PacRim5 Special Issue

Session ID : 15

DOI https://doi.org/10.14852/jcersjsuppl.112.0.S1125.0

Conference information

Host: The Ceramic Society of Japan

Co-host: Iketani Science and Technology Foundation, International Ceramic Federation, Commemorative Organization for the Japan World Exposition '70, The American Ceramic Society, The Australasian Ceramic Society, The Chinese Ceramic Society, The Korean Ceramic Society, Joint Research Consortium of Synergy Ceramics/Fine Ceramics Research Association, Nanotechnology Researchers Network Center of Japan, The Special Coordination Funds for Promoting Science and Technology, Japan National Tourist Organization, Aichi Prefectural Government, CASIO SCIENCE PROMOTION FOUNDATION, DAIKO FOUNDATION, Nagoya Convention and Visitors Bureau, The Asahi Glass Foundation, The Kao Foundation For Arts And Sciences, The Murata Science Foundation, The Ogasawara Foundation for the Promotion of Science & Engineering, ASAHI GLASS CO., LTD. Research Center, CENTRAL GLASS CO., LTD., ELECTRIC GLASS INDUSTRY ASSOCIATION OF JAPAN (EGAJ), Hattori Company, Ltd., Hitachi Research Laboratory, Hitachi, Ltd., HOYA CORPORATION, INAX Corporation, ITOCHU CERATECH CORP., Japan Cement Association, KYOCERA Corporation, KYUSHU REFRACTORIES CO., LTD., MINO CERAMIC CO., LTD., Murata Manufacturing Co., Ltd., NGK INSULATORS LTD., NGK SPARK PLUG CO., LTD., NICHIAS Corporation, NIKKO COMPANY, Nippon Electric Glass Co., Ltd., Nippon Sheet Glass Co., Ltd., NORITAKE CO., LIMITED, Tokuyama Corporation, TOTO LTD.

Papers

Dielectric, Ferroelectric and Piezoelectric Properties of Barium Titanate and Bismuth Potassium Titanate Solid-Solution Ceramics

Yuji HIRUMA, Hajime NAGATA, Tadashi TAKENAKA

Author information

Keywords: Lead-free piezoelectric ceramics, BaTiO₃, (Bi_1/2Na_1/2)TiO₃, Dielectric properties, Piezoelectric properties, D-E hysterisis loop, Curie temperature

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Abstract

Dielectric, ferroelectric and piezoelectric properties of barium titanate, BaTiO₃-based solid solution, (1-x)BaTiO_3-x(Bi_1/2K_1/2)TiO₃ (BTBK100x) were studied as a lead-free piezoelectric material. Curie temperature, T_c, of the BTBK100x ceramics shifted to higher temperature with increasing the amount (x) of (Bi_1/2K_1/2)TiO₃ and the T_c at x=0.2 was higher than 200°C. Electromechanical coupling factor, k₃₃, and piezoelectric constant, d₃₃, of BTBK20+MnCO₃ (0.1 wt%) were 0.33 and 54.6 pC/N, respectively.

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