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Improvement of Superconducting Properties on Bi2Sr2CaCu2Ox Multilayer Superconducting Tape and It’s Application

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Advances in Cryogenic Engineering Materials

Part of the book series: Advances in Cryogenic Engineering ((ACRE,volume 44))

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Abstract

In order to improve the superconducting properties of Bi-2212/Ag multilayer tape, we reduced the Ca and Cu concentrations in the starting superconducting powder. Phase analyses using the HT-XRD measurement indicated that the Bi-free impurity ((11) phase) became unstable above the partial melting temperature of Bi-2212 phase. As a result, the amount of (11) phase after a heat treatment decreased. In the case of the composition Bi2Sr2Ca0.8Cu1.8Ox, the Jc values were higher than 1.5×105A/cm2 at 20K in self fields and 1.2×105A/cm2 at 4.2K and 10T with good reproducibility. The Jc values of the sample were higher than those of the tapes with 2212 composition. A double pancake coil fabricated using a 100m-class tape carried Ic of 100A at 20K. The Ic value of the coil was limited by the Ic in magnetic fields applied to perpendicular to the tape surface.

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Author information

Authors and Affiliations

  1. Showa Electric Wire & Cable Co. Ltd., Kawasaki, Kanagawa, 210, Japan

    T. Hasegawa, Y. Hikichi & Y. Aoki

  2. National Research Institute for Metals, Tsukuba, Ibaraki, 305, Japan

    H. Kumakura, H. Kitaguchi & K. Togano

Authors
  1. T. Hasegawa
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  2. Y. Hikichi
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  3. Y. Aoki
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  4. H. Kumakura
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  5. H. Kitaguchi
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  6. K. Togano
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Editor information

Editors and Affiliations

  1. Argonne National Laboratory, Argonne, Illinois, USA

    U. Balu Balachandran

  2. Naval Research Laboratory, Washington, D.C., USA

    Donald G. Gubser

  3. Texas A&M University, College Station, Texas, USA

    K. Ted Hartwig

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

    Richard P. Reed

  5. Oregon State University, Corvallis, Oregon, USA

    William H. Warnes

  6. Synchrony, Bordentown, New Jersey, USA

    Victoria A. Bardos

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© 1998 Springer Science+Business Media New York

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Hasegawa, T., Hikichi, Y., Aoki, Y., Kumakura, H., Kitaguchi, H., Togano, K. (1998). Improvement of Superconducting Properties on Bi2Sr2CaCu2Ox Multilayer Superconducting Tape and It’s Application. In: Balachandran, U.B., Gubser, D.G., Hartwig, K.T., Reed, R.P., Warnes, W.H., Bardos, V.A. (eds) Advances in Cryogenic Engineering Materials . Advances in Cryogenic Engineering, vol 44. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9056-6_68

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  • DOI: https://doi.org/10.1007/978-1-4757-9056-6_68

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4757-9058-0

  • Online ISBN: 978-1-4757-9056-6

  • eBook Packages: Springer Book Archive

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