(Bi_1/2Na_1/2)TiO₃-(Bi_1/2K_1/2)TiO₃-BaTiO₃-Based Lead-Free Piezoelectric Ceramics

• Makiuchi Yoichi

  Faculty of Science and Technology, Tokyo University of Science

• Aoyagi Rintaro

  Faculty of Science and Technology, Tokyo University of Science

• Hiruma Yuji

  Faculty of Science and Technology, Tokyo University of Science

• Nagata Hajime

  Faculty of Science and Technology, Tokyo University of Science

• Takenaka Tadashi

  Faculty of Science and Technology, Tokyo University of Science

書誌事項

タイトル別名

• (Bi1/2Na1/2)TiO3-(Bi1/2K1/2)TiO3-BaTiO3-Based Lead-Free Piezoelectric Ceramics

抄録

The piezoelectric properties of lead-free x(Bi_1⁄2Na_1⁄2)TiO₃-y(Bi_1⁄2K_1⁄2)TiO₃-zBaTiO₃ [BNBKy:z(x); y:z = 4:1 and 2:1, x+y+z=1] with tetragonal compositions were investigated, focusing on the secondary phase transition T₂ from the ferroelectric to antiferroelectric phases. Although the T₂ temperatures of BNBK near the MPB composition remained at about 115°C, T₂ rapidly shifted to a higher temperature of 200°C or higher for the off-MPB composition [x≤0.75 for BNBK4:1(x) and x≤0.78 for BNBK2:1(x)]. The piezoelectric activities of off-MPB compositions decreased with decreasing the amount (x) of BNT. The larger piezoelectric constant d₃₃=135 pC/N, the higher secondary phase transition temperature T₂=197°C, and the coupling factor k₃₃=0.45 with a good temperature dependence were obtained for BNBK2:1(0.78).

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 44 (6B), 4350-4353, 2005

  The Japan Society of Applied Physics

キーワード

• lead-free
• piezoelectric ceramics
• bismuth sodium titanate
• barium titanate
• bismuth potassium titanate

詳細情報

• CRID: 1390282681242363264
• NII論文ID: 210000058206
• NII論文ID: 10016584046
• NII論文ID: 30021866295
• NII論文ID: 130004534261
• NII書誌ID: AA10457675
• DOI: 10.1143/jjap.44.4350
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.4350
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.4350/pdf
• 本文言語コード: en
• データソース種別:
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