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90K Superconductivity in Ca-Substituted YBa2Cu4O8

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Advances in Superconductivity II

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Abstract

Superconducting properties of Ca-substituted YBa2Cu4O8 are investigated. The transition terrperature Tc increases with Ca content. A Tc 6f OK is achieved for the carposition Y0.9Ca0.1Ba2Cu4O8. As well as YBa2Cu4O8, its Ca-doped catpounds shows an excellent thermal stability in oxygen content up to a high terrperature (~800° C). The intragranullar critical current densities of YBa2Cu4O8 compounds are relatively low, which may be due to the absence of twinning planes.

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Author information

Authors and Affiliations

  1. Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13, Shinonome 1-chome, Koto-ku, Tokyo, 135, Japan

    T. Miyatake, K. Yamaguchi, T. Takata, S. Gotoh, N. Koshizuka & S. Tanaka

Authors
  1. T. Miyatake
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  2. K. Yamaguchi
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  3. T. Takata
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  4. S. Gotoh
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  5. N. Koshizuka
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  6. S. Tanaka
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Editor information

Editors and Affiliations

  1. Department of Physics, Kyoto University, Kyoto, 606, Japan

    Takehiko Ishiguro

  2. Electrotechnical Laboratory, Tsukuba, 305, Japan

    Koji Kajimura

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© 1990 Springer Japan

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Miyatake, T., Yamaguchi, K., Takata, T., Gotoh, S., Koshizuka, N., Tanaka, S. (1990). 90K Superconductivity in Ca-Substituted YBa2Cu4O8 . In: Ishiguro, T., Kajimura, K. (eds) Advances in Superconductivity II. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68117-5_43

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  • DOI: https://doi.org/10.1007/978-4-431-68117-5_43

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-68119-9

  • Online ISBN: 978-4-431-68117-5

  • eBook Packages: Springer Book Archive

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