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The Variation of Tc Due to Low Temperature Annealing (Aging) at 120°C in the Low-Tc Phase BSCCO Superconductors

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Advances in Superconductivity V

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Abstract

Bulk samples containing mainly the low Tc phase of BSCCO superconductors were prepared. After the samples were annealed in oxygen or nitrogen at 500°C, they were kept in air at 120°C. This aging treatment affected the Tc of low Tc phase. For the specimens annealed in oxygen at 500°C, the Tc increased from 60K to 62K and 75K after aging of 20 and 450 hr, respectively. On the other hand, the variation of Tc due to aging was small for the specimens annealed in nitrogen at 500°C. The aging effects were not observed at room temperature. The diffusion distance at 120°C is calculated to be of the order of 100nm by using the diffusion data of Runde et al. The analyses suggest the possible existence of oxygen ordering in BSCCO system.

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Authors and Affiliations

  1. Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi, 480-11, Japan

    Shigeki Kobayashi

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  1. Shigeki Kobayashi
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Editors and Affiliations

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

    Yoshichika Bando

  2. Superconductivity Research Laboratory, ISTEC, Koto-ku, Tokyo, 135, Japan

    Hisao Yamauchi

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© 1993 Springer-Verlag Tokyo

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Kobayashi, S. (1993). The Variation of Tc Due to Low Temperature Annealing (Aging) at 120°C in the Low-Tc Phase BSCCO Superconductors. In: Bando, Y., Yamauchi, H. (eds) Advances in Superconductivity V. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68305-6_64

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  • DOI: https://doi.org/10.1007/978-4-431-68305-6_64

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-68307-0

  • Online ISBN: 978-4-431-68305-6

  • eBook Packages: Springer Book Archive

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