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Advances in Cryogenic Engineering Materials pp 923–930Cite as

Superconducting Properties and Structures of A15 Nb3 (Al,Ge) Tape Fabricated by a New Process

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Part of the book series: An International Cryogenic Materials Conference Publication ((ACRE,volume 40))

Abstract

The A15 Nb3(Al0. 8,Geo. 2) tape has been prepared by the reaction between the Q -phase Nb2(A1,Ge) and Nb powders. The fabrication of the tape using Nb sheath was quite successful. The superconducting properties and structure of the newly prepared tapes were studied, and compared with those of tapes made by A15 Nb3(A1,Ge) powder. The finer σ-phase and Nb starting powders yield pronounced improvement in Jc at magnetic fields throughout from 10 to 25 T. A Jc of over 2.5)104 A/cm2 has been so far obtained at 21.5 T and 4.2 K. The addition of Mg0 powder is found to be effective for enhancing Jc and reducing the peak effect.

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References

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Author information

Authors and Affiliations

  1. Faculty of Engineering, Tokai University, Hiratsuka, Kanagawa, 259-12, Japan

    Kaoru Sakinada, Masakazu Kobayashi, Masahiko Natsuume & Kyoji Tachikawa

Authors
  1. Kaoru Sakinada
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  2. Masakazu Kobayashi
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  3. Masahiko Natsuume
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  4. Kyoji Tachikawa
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Editor information

Editors and Affiliations

  1. Cryogenic Materials, Inc., Boulder, Colorado, USA

    Richard P. Reed

  2. U.S. Department of Commerce, National Institute of Standards and Technology, Boulder, Colorado, USA

    Fred R. Fickett

  3. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, USA

    Leonard T. Summers

  4. MS Publications, Boulder, Colorado, USA

    M. Stieg

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© 1994 Springer Science+Business Media New York

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Sakinada, K., Kobayashi, M., Natsuume, M., Tachikawa, K. (1994). Superconducting Properties and Structures of A15 Nb3 (Al,Ge) Tape Fabricated by a New Process. In: Reed, R.P., Fickett, F.R., Summers, L.T., Stieg, M. (eds) Advances in Cryogenic Engineering Materials . An International Cryogenic Materials Conference Publication, vol 40. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9053-5_118

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  • DOI: https://doi.org/10.1007/978-1-4757-9053-5_118

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4757-9055-9

  • Online ISBN: 978-1-4757-9053-5

  • eBook Packages: Springer Book Archive

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