Quick Fabrication of Highly Oriented Bi-2223 Superconducting Ceramics  Using Plate-Like Seed Crystals

Hidenobu ITOH; Koji TAKEDA; Masami KISHI; Junichi TAKAHASHI

doi:10.14852/jcersjsuppl.112.0.S591.0

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

Session ID : 8

DOI https://doi.org/10.14852/jcersjsuppl.112.0.S591.0

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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

Quick Fabrication of Highly Oriented Bi-2223 Superconducting Ceramics Using Plate-Like Seed Crystals

Hidenobu ITOH, Koji TAKEDA, Masami KISHI, Junichi TAKAHASHI

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Keywords: Superconductor, Bi-Pb-Sr-Ca-Cu-O system, 2223 phase, Seed crystal, Quick fabrication, Grain-orientation

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Abstract

We have successfully prepared plate-like fine powder of high-Tc phase (2223) superconducting oxide with preferential 002 faces by grinding in dehydrated pure ethanol. In the current study, we attempted quick fabrication of highly oriented (Bi, Pb)₂Sr₂Ca₂Cu₃O_x superconductor using plate-like seed crystals. It was found that the addition of the seed to the commercial precursor (Dowa Kogyo) brought about a considerable reduction in fabrication time. Almost all single phase (2223) sintered superconducting oxide was obtained by heating the precursor mixed with 30 wt% seed for 4 h at 870°C. Furthermore, the grains of the sintered disk were highly oriented.

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