Fabrication and Characterization of Gradient PZT Composite

Masato MATSUBARA; Toshiaki YAMAGUCHI; Wataru SAKAMOTO; Koichi KIKUTA; Toshinobu YOGO; Shin-ichi HIRANO

doi:10.14852/jcersjsuppl.112.0.S486.0

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

Session ID : 6

DOI https://doi.org/10.14852/jcersjsuppl.112.0.S486.0

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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

Fabrication and Characterization of Gradient PZT Composite

Masato MATSUBARA, Toshiaki YAMAGUCHI, Wataru SAKAMOTO, Koichi KIKUTA, Toshinobu YOGO, Shin-ichi HIRANO

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Keywords: PZT, MPB, Gradient composite ceramics, Temperature properties

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Abstract

Highly temperature stable Pb(Zr, Ti)O₃ ceramics have been developed with planar mode of electromechanical coupling factor (k_p) and frequency constant (N_p). In order to improve the temperature stability of piezoelectric properties, a PZT composite with stacked PZT53/47, 52/48 and 51/49 layers was fabricated and evaluated in terms of the temperature dependence of k_p and N_p between -190°C and 190°C, compared with 10 mol% (Li_0.5La_0.5) doped Pb(Zr, Ti)O₃ (PLLZT) ceramics. PLLZT ceramics have stable frequency constants to temperature, whereas its k_p values become lowers than 50% with increasing temperature. On the other hand, the newly developed gradient PZT composite proposed in this study had stable temperature properties of k_p and N_p in the wide temperature range. In addition, the k_p value of the gradient composite was constantly kept higher than 50%.

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