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Development of High Performance Superconducting Materials and Wires for Next Generation

Research Project

Project/Area Number 10555306
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 無機工業化学
Research InstitutionThe University of Tokyo

Principal Investigator

KISHIO Kohji  Department of Applied Chemistry, The University of Tokyo, Professor, 大学院・工学系研究科, 教授 (50143392)

Co-Investigator(Kenkyū-buntansha) SATO Ken-ichi  Manager, Sumitomo Electric Industries Ltd., 基盤技術研究所, 部長
OTZSCHI Kenji  Engineering Research Institute, The University of Tokyo, Research Associate, 工学部・附属総合試験所, 助手 (00301127)
SHIMOYAMA Jun-ichi  Engineering Research Institute, The University of Tokyo, Associate Professor, 工学部・附属総合試験所, 助教授 (20251366)
KANEKO Tetsuyuki  Scientist, Sumitomo Electric Industries, Ltd., 基盤技術研究所, 主任研究員
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥13,200,000 (Direct Cost: ¥13,200,000)
Fiscal Year 1999: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 1998: ¥8,800,000 (Direct Cost: ¥8,800,000)
KeywordsSuperconducting Materials / High-TィイD2cィエD2 Superconductors / Oxides / Critical Current Density / Liquid Nitrogen / Superconducting Wires / Superconducting Tapes / Process Control
Research Abstract

The goal of the present research are to improve the chemical and Structural stability and critical current densities of high temperature superconductors for next generation and to establish the manufacturing method for short and long length conductors for practical applications at liquid nitrogen temperature. While the mercury(Hg)-based cuprate superconductors have been known to be chemically rather unstable and its preparation process is not simple, we have found that doping of a small amount of transition ions such as rhenium(Re) or chromium(Cr) is quite effective in stabilization of the compounds. Single crystals of Re-doped Hg-Ba-Ca-Cu-O were successfully grown in both bulk and thick film tapes by the melt-solidification method. The Ag/Cr coated Ni foil wag found to be the moat favorite substrate for Hg-based tapes. Mechanisms of the improved flux pinning properties of heavily Pb-doped and oxygen controlled Bi2212 single crystal were elucidated. Processing techniques of Bi(Pb)2212./Ag composite tapes has been also developed.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] T. Motohashi et al.: "Systematic Decrease of Resistivity Anisotropy in Bi2Sr2CaCu2Oy by Pb Doping"Physical Review. B59. 14080-14086 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Motohashi et al.: "Observation of the Josephson plasma reflectivity edge in the infrared region in Bi-based superconducting cuprate"Physical Review. B61. 9269-9272 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Nakayama et al.: "Influence of electromagnetic anisotropy on the flux-pinning strength of columnar defects in Bi2.2-xPbxSr1.8CaCu2.0Oy"Physical Review. B62. 1452-1457 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Murakami et al.: "Fabrication of (Hg1-xRex)Ba2Ca2Cu3Oy Tapes"Physica C. (未定)(印刷中). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Sugita et al.: "Fabrication of Heavily Pb-doped Bi2212/Ag Composite Tapes"Physica C. (未定)(印刷中). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Nakayama et al.: "In-plane anisotropy of critical current density in Bi1.6Pb0.6Sr1.8CaCu2.0Oy single crystal"Physica C. (未定)(印刷中). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 岸尾 光二: "別冊化学「これはすごい!化学の世界記録集」"化学同人(分担執筆). 175 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 下山 淳一: "別冊化学「これはすごい!化学の世界記録集」"化学同人(分担執筆). 175 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Motohashi et al.: "Systematic Decrease of Resistivity Anisotropy in Bi2Sr2CaCu20y by Pb Doping"Phys. Rev.. B59. 14080-14086 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Motohashi et al.: "Observation of the Josephson Plasma Reflectivity Edge in the Infrared Region in Bi-based Superconducting Cuprates"Phys. Rev.. B61. R9269-R9272 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Nakayama et al.: "Influence of electromagnetic anisotropy on the flux-pinning strength of columnar defects in Bi2.2-xPbxSr1.8CaCu2.0Oy"Phys Rev.. B62. 1452-1457 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Murakami et al.: "Fabrication of (Hg1-xRex)Ba2Ca2Cu3Oy Tapes"Physica C. (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Sugita et al.: "Fabrication of Heavily Pb-doped Bi2212/Ag Composite Tapes"Physica C. (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Nakayama et al.: "In-plane anisotropy of critical current density in Bi1.6Pb0.6Sr1.8CaCu2.0Oy Single crystal"Physica C. (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Motohashi et al.: "Systematic Decrease of Resistivity Anisotropy in Bi2Sr2CaCu20y by Pb Doping"Physical Review. B59(21). 14080-14086 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Motohashi et al.: "Observation of the Josephson plasma reflectivity edge in the infrared region in Bi-based supercoducting cuprate"Physical Review. B61(13)(印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Nakayama et al.: "Influence of electromagnetic anisotropy on the flux-pinning strength of columnar defects in Bi2.2-xPbxSr1.8CaCu2.00y"Physical Review. b61(21)(印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Murakami et al.: "Fabrication of (Hg1-xRex)Ba2Ca2Cu30y Tapes"Physica C. 未定 (印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Sugita et al.: "Fabrication of Heavily Pb-doped Bi2212/Ag Composite Tapes"Physica c. 未定 (印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Nakayama et al.: "In-plane anisotropy of critical current density in Bil.6Pb0.6Sr1.8CaCu2.00y single crystal"Physica C. 未定 (印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 岸尾 光二: "別冊化学「これはすごい!化学の世界記録集」"化学同人(分担執筆). 175 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 下山 淳一: "別冊化学「これはすごい!化学の世界記録集」"化学同人(分担執筆). 175 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] J.Shimoyama et al.: "“Dramatically Improved Flux Pinning Properties of Heavily Pb-Doped Bi2212 Single Crystals and Ag Composite Tapes"" Advances in Superconductivity. X(1). 279-284 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kishio et al.: "“Strong Flux Pinning Observed in Pb-Doped Bi2212 Single Crystals"" Proc.1998 International Workshop on Superconductivity. 99-100 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Sasagawa et al.: "“First-Order Vortex Lattice Phase Transition in (La1-xSrx)2CuO4 Single Crystals: Universal Scaling of the Transition Lines in High Temperature Superconductors"" Physical Review Letters. 80(19). 4297-4300 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] A.Tonomura et al.: "“Motions of Vortices in Superconductors"" Nature. 397(6717). 308-309 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 下山淳一: "“Pb置換Bi2212の高臨界電流特性"" 応用物理. 67(11). 1171-1175 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 岸尾光二: "高温超伝導の科学“多結晶体の微細構造と超伝導特性"(分担執筆)" 裳華房(発刊予定), 400 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 岸尾光二: "“応用物理用語大事典"(<超伝導>責任編集委員)" オーム社, 1178 (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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