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Effects of Starting Composition and Treating Atmosphere on Phase formation, Microstructure and Jc of Bi2Sr2CaCu2Ox/Ag Multilayer Tapes

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Advances in Superconductivity XI

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Abstract

The Bi-2212/Ag tapes with nominal composition of Bi2Sr2.05Ca0.95Cu2Ox and Bi2Sr2.05Ca0.95Cu2Ox have been prepared by PAIR process and melt-solidification process in the atmosphere of oxygen and air. The result shows the starting composition and treating atmosphere, mainly affecting on the amount of extra phases (Bi-free, Cu-free phases), play an important role in the microstructure and Jc of the tapes. In treating in pure oxygen, the reduction of extra phases and highest Jc of over 5.0 × 105 A/cm2 at 4.2 K, 10 T is obtained in Bi2Sr2.05Ca0.95Cu2Ox/Ag tape, while in treating in air, reduction of extra phases and higher Jc of 4.0 × 105 A/cm2 is obtained in Bi2Sr2.05Ca0.95Cu2Ox/Ag tape than Bi2Sr2.05Ca0.95Cu2Ox/Ag tape.

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Authors and Affiliations

  1. National Research Institute for Metals, 1-2-1 Sengen, Tsukuba, 305-0047, Japan

    Hanping Miao, Hitoshi Kitaguchi, Hiroaki Kumakura & Kazumasa Togano

  2. CREST, Japan Science and Technology Corporation, 1-2-1 Sengen, Tsukuba, 305-0047, Japan

    Hanping Miao & Kazumasa Togano

  3. Showa Electric Wire & Cable Co. Ltd., 2-1-1 Odasakae, Kawasaki, 210-0843, Japan

    Takayo Hasegawa & Tsutomu Koizumi

Authors
  1. Hanping Miao
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  2. Hitoshi Kitaguchi
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  3. Hiroaki Kumakura
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  4. Kazumasa Togano
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  5. Takayo Hasegawa
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  6. Tsutomu Koizumi
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Editors and Affiliations

  1. Superconductivity Research Laboratory, ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo, 135-0062, Japan

    Naoki Koshizuka (Deputy Director General, Director, Division 1) & Setsuko Tajima (Director, Division 2) (Deputy Director General, Director, Division 1) &  (Director, Division 2)

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© 1999 Springer Japan

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Miao, H., Kitaguchi, H., Kumakura, H., Togano, K., Hasegawa, T., Koizumi, T. (1999). Effects of Starting Composition and Treating Atmosphere on Phase formation, Microstructure and Jc of Bi2Sr2CaCu2Ox/Ag Multilayer Tapes. In: Koshizuka, N., Tajima, S. (eds) Advances in Superconductivity XI. Springer, Tokyo. https://doi.org/10.1007/978-4-431-66874-9_208

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  • DOI: https://doi.org/10.1007/978-4-431-66874-9_208

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-66876-3

  • Online ISBN: 978-4-431-66874-9

  • eBook Packages: Springer Book Archive

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