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Dramatically Improved Flux Pinning Properties of Heavily Pb-Doped Bi2212 Single Crystals and Ag Composite Tapes

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Advances in Superconductivity X

Abstract

Magnetization properties of Bi(Pb)2212 single crystals were found to be systematically improved by increasing Pb-do** and oxygen do** levels. At the liquid nitrogen temperature, the heavily Pb- doped and moderately carrier overdoped sample exhibited the highest J c and H irr , which were even higher than the Pb-ion irradiated Bi2212. The mechanism of the improved flux pinning properties in the present system was explained by the cooperative effects of lowered electromagnetic anisotropy and generation of temperature- and field-induced pinning centers. The heavily Pb-doped Bi2212/Ag composite tapes were successfully synthesized by melt-solidification method under a reduced atmosphere and their magnetic properties were much better compared to the conventional Bi2212/Ag tapes.

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Authors and Affiliations

  1. Department of Superconductivity, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan

    J. Shimoyama, Y. Nakamama, T. Motohashi, T. Fujita, T. Yamada, K. Sugita, K. Kitazawa & K. Kishio

  2. Institute for Chemical Research, Kyoto University, Uji, Kyoto 611, Japan

    Z. Hiroi, I. Chong & M. Takano

Authors
  1. J. Shimoyama
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  2. Y. Nakamama
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  3. T. Motohashi
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  4. T. Fujita
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  5. T. Yamada
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  6. K. Sugita
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  7. K. Kitazawa
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  8. K. Kishio
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  9. Z. Hiroi
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  10. I. Chong
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  11. M. Takano
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Editor information

Editors and Affiliations

  1. Department of Materials Science and Engineering, Kyoto University, Yoshidahonmachi, 606-8501, Sakyo-ku, Kyoto, Japan

    Kozo Osamura (Professor) (Professor)

  2. Division 8 Superconductivity Research Laboratory, ISTEC, 2-4-1 Mutsuno, 456-0000, Atsuta-ku, Nagoya, Japan

    Izumi Hirabayashi (Division Director) (Division Director)

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© 1998 Springer Japan

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Shimoyama, J. et al. (1998). Dramatically Improved Flux Pinning Properties of Heavily Pb-Doped Bi2212 Single Crystals and Ag Composite Tapes. In: Osamura, K., Hirabayashi, I. (eds) Advances in Superconductivity X. Springer, Tokyo. https://doi.org/10.1007/978-4-431-66879-4_65

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  • DOI: https://doi.org/10.1007/978-4-431-66879-4_65

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-66881-7

  • Online ISBN: 978-4-431-66879-4

  • eBook Packages: Springer Book Archive

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