Conducting Properties of SrCeO3 System Doped with Various Rare Earth Metals

Sachio OKADA; Atsushi MINESHIGE; Masafumi KOBUNE; Tetsuo YAZAWA

doi:10.14852/jcersjsuppl.112.0.S700.0

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

セッションID: 9

DOI https://doi.org/10.14852/jcersjsuppl.112.0.S700.0

会議情報

主催: The Ceramic Society of Japan

共催: 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

Conducting Properties of SrCeO₃ System Doped with Various Rare Earth Metals

Sachio OKADA, Atsushi MINESHIGE, Masafumi KOBUNE, Tetsuo YAZAWA

著者情報

キーワード: SrCeO₃-based oxide, High temperature protonic conductor, Ionic radius, Raman spectroscopy (RS), Local distortion, Proton, Oxide ions, Hole

会議録・要旨集フリー

詳細

抄録

Relationship between electrical conductivities and local structure was studied for SrCeO₃-based perovskite-type oxides doped with various rare earth metals, M (M=Sc³⁺, Yb³⁺, Y³⁺, Gd³⁺, Sm³⁺ and La³⁺). The conducting behavior was considered to be protonic bellow 973 K. The local distortion around dopant ions in perovskite-type oxide was evaluated by examining relative area of the Raman band at around 345 cm^-1 which is connected with stretching vibrational modes of CeO₆ octahedra. The maximal band area was obtained for Yb-doped SrCeO₃. The electrical conductivity increased with increasing the relative area of this Raman band, and the maximal conductivity was observed for Yb³⁺ doped SrCeO₃.

責任著者(Corresponding author)

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