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Investigation of the Solid State Reaction between Metallic conducting and Ferroelectric Ceramics for the Development of Materials with Extremely High Dielectric Constants

Research Project

Project/Area Number 62470066
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 無機工業化学
Research InstitutionKyushu Insitute of Technology

Principal Investigator

KUWABARA Makoto  Faculty of Engineering, Kyushu Institute of Technology, 工学部, 教授 (40039136)

Co-Investigator(Kenkyū-buntansha) NAKAMURA Hidetsugu  Faculty of Engineering, Kyushu Institute of Technology, 工学部, 講師 (40037940)
HARA Yasutake  Faculty of Engineering, Kyushu Institute of Technology, 工学部, 教授 (10039084)
Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥4,500,000 (Direct Cost: ¥4,500,000)
Fiscal Year 1988: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1987: ¥3,600,000 (Direct Cost: ¥3,600,000)
KeywordsBL capacitor / Grain boundary potential barrier / Metallic conducting ceramics / Ferroelectrics / Joining of ceramics / Solid state reaction / BaPbO_3 / Pb(Fe_<2@3>,W_<1@3>)O_3 / Pb(Fe┣D22 / 3温W┣D21 / 3温)O_3 / 電子材料セラミックス / 高誘電率材料 / セラミックス界面
Research Abstract

Preliminary experiments have been made in attempt to develop barrier-layer (BL) capacitors with an extremely high dielectric constant by using a metallic conducting material (BaPbO_3) and ferroelectric materials (BaTiO_2, Pb(Fe,W)O_3, and so on, which are added to form insulating grain boundary phases). Some of the experiments carried out in this study and the ob-tained results may by described as follows:
1) Solid state reaction between BaPbO_3 and TiO_2 powders: The formation of BaTiO_3 and PbTiO_3 occurred above about 800 C through the solid state reaction, and it was confirmed by X-ray diffractometry.
2) Joining of BaPbO_3 with TiO_2 ceramics and phase analysis of the reaction layers: BaPbO_3 and TiO_2 ceramics were thermally joined at 1000 C in air. It has been found that BaTiO_3 and PbTiO_3 were formed layer upon layer (side by side) at the interface between the two ceramics joined. This was confirmed by XMA (X-ray microanalysis).
3) Effect of additives on the grain structure of BaPbO_3 ceramics: More than twenty kinds of oxides were added in BaPbO_3 to examine their influences on the grain structure of BaPbO3 sintered bodies. The additions of ZnO, CuO and NiO were found to be effective to produce the materials with large grains grown favorite for making BL capacitors.
4) Preparation of SrTiO3-Pb(Fe,W)O_3 BL capacitors: BL capacitors with a high performance dielectric property have been successfully prepared using the SrTiO_3-Pb(Fe_<2/3>W_<1/3>)O_3 system. The typical dielectric constant and tan of the materials were found to be 1.5x10^5 and 5%, respectively. It may be possible to say that BL capacitors with much improved dielectric properties can be produced.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] Makoto,Kuwabara: Japan.J.Appl.Phys.26. L1821-L1823 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 倉原誠,武藤操,原泰毅,中村英嗣: 粉子および粉末冶金. 34. 149-151 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Makoto,Kuwabara;Narutoshi,Kusaka: Japan.J.Appl.Phys.27. L1504-L1506 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 桑原誠,井戸誠,下岡弘和,日高清剛,武尾政俊,片山功: 粉体および粉末冶金. 35. 847-850 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 桑原誠: 材料科学. 25. 215-222 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] M.,Kuwabara;H.,Nagata;K.,Nakao;R.,Liang;M.,Takeo: J.Mater.Sci.Lett.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 柳田博明,桑原誠,上垣外修巳,三小田眞彬,村田充弘 編: "ファインセラミックス-up to date-" 朝倉書店,

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Makoto,Kuwabara: "Preparation of High-Tc Superconducting Y-Ba-Cu-O ceramics and Their Grain Morphologies" Japan. J. Appl. Phys.26. 1821-1823 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Makoto,Kuwabara; Misao,Muto; Yasutake,Hara; Hidetsugu,Nakamura: "Microstructure of the Interface Reaction Layer of a Thermally Joined BaPbO_3-TiO_2 Ceramics and Its Electrical Properties" J. Japan Soc. Powder and Powder Metallurgy. 34. 149-151 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Makoto,Kuwabara; Narutoshi,Kusaka: "Microstructure and Supercondcuting Properties in YBa_2Cu_3O_<7-x> Ceramics Doped with Nb_2O_5 and WO_3" Japan. J. Appl. Phys.27. 1504-1506 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Makoto,Kuwabara: "Microstructure and Electronic Functions in Electronic Ceramics" J. Mater. Sci. Soc. Japan. 25. 215-222 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Makoto,Kuwabara; Hiroya,Nagata; Kaichiro,Nakao; Ruilin,Liang; Masatoshi,Takeo: "Joining of BaPbO_3 Ceramics with PTCR-Type (BaPb)TiO_3 Ceramics and Their Electrical Properties" J. Mater. Sci. Lett.8. (in print)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] H. Yanagida; M. Kuwabara; O. Kamigaito; M. Mikoda; M. Murata: Fine Ceramics. Asakura Publishing Co., (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Makoto Kuwabara.: Japan.J.Appl.Phys.26. L1821-L1823 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] 桑原誠・武藤操・原泰毅・中村英嗣: 粉体および粉末冶金. 34. 149-151 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] Makoto Kuwabara.;Narutoshi Kusaka.: Japan.J.Appl.Phys.27. L1504-L1506 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 桑原誠・井戸誠・下岡弘和・日高清剛・武尾政俊・片山功: 粉体および粉末冶金. 35. 847-850 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 桑原誠: 材料科学. 25. 215-222 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] M.Kuwabara・H.Nagata・K.Nakao・R.Liang・M.Takeo.: J.Mater.Sci.Lett.

    • Related Report
      1988 Annual Research Report
  • [Publications] 柳田博明・桑原誠・上垣外修巳・三小田眞彬・村田充弘 編: "ファインセラミックス-up to date-" 朝倉書店,

    • Related Report
      1988 Annual Research Report
  • [Publications] Makoto Kuwabara;Toshiyuki Ide: Am.Ceram.Soc.Bull.66. 1401-1405 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Makoto Kuwabara: Japan.J.Appl.Phys.26. L1821-L1823 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 桑原誠;武藤操;原泰毅;中村英嗣: 粉体および粉末冶金. 34. 149-151 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Makoto Kuwabara;Kaichiro Nakao;Koji Okazaki: J.Am.Ceram,Soc.71. C110-C112 (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] Makoto Kuwabara: Proc, '87 Inter.Symp.on Science and Technology of Sintering. (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] 桑原誠: 材料科学.

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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