Fabrication of lead-free semiconducting ceramics using a BaTiO3-(Bi1/2Na1/2)TiO3 system by adding CaO
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- TATEISHI Takashi
- Graduate School of Science and Technology, Tokyo Institute of Technology
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- HOSHINA Takuya
- Graduate School of Science and Technology, Tokyo Institute of Technology
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- TAKEDA Hiroaki
- Graduate School of Science and Technology, Tokyo Institute of Technology
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- TSURUMI Takaaki
- Graduate School of Science and Technology, Tokyo Institute of Technology
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BaTiO3–(Bi1/2Na1/2)TiO3 (abbreviated as BT–BNT) solid solution semiconducting ceramics, as a candidate for a lead-free PTC (Positive Temperature Coefficient of resistivity) thermistor usable over 130°C, were synthesized by adding CaO into the calcined powder. The CaO added BT–BNT ceramics showed semiconducting behavior with the resistivity at room temperature ρRT = 103 Ω cm and a resistivity change near Curie temperature. Chemical composition analysis suggested that Ca2+ acted as a donor by substituting for Na+ in the BT–BNT ceramics.
収録刊行物
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 119 (1395), 828-831, 2011
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390282680263934848
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- NII論文ID
- 130001310509
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- NII書誌ID
- AA12229489
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- COI
- 1:CAS:528:DC%2BC3MXhsVOrsr%2FM
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- ISSN
- 13486535
- 18820743
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- NDL書誌ID
- 11291082
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可