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Strong Flux Pinning In Melt-Grown RE123 (RE: Sm, Eu, Gd) Superconductors

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Advances in Superconductivity VII

Abstract

REBa2Cu3Oy superconductors with rare earth (RE) ions with large radii (RE: La, Nd, Sm, Eu) exhibit relatively low T c due to the presence of RE-Ba solid solution. We have found that this solid solution can be suppressed if these superconductors are melt processed in a reduced oxygen atmosphere. We have also found that critical current densities of these superconductors are higher than those of melt processed YBa2Cu3Oy with fine Y2BaCuO5 inclusions in a high field region. The irreversibility line was also shifted toward the higher H-T region. We believe that flux pinning in these superconductors is ascribable to a finely distributed RE(Ba1−x,REx)2Cu3Oy phase in a good superconductive matrix.

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Authors and Affiliations

  1. Superconductivity Research Laboratory, International Superconductivity Technology Center, 1-16-25 Shibaura, Minato-ku, Tokyo 105, Japan

    Masato Murakami, Sang-Im Yoo, Takamitsu Higuchi, Takashi Oyama, Naomichi Sakai & Shoji Tanaka

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  1. Masato Murakami
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  2. Sang-Im Yoo
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  3. Takamitsu Higuchi
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  4. Takashi Oyama
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  5. Naomichi Sakai
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  6. Shoji Tanaka
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Editor information

Editors and Affiliations

  1. Department of Electronics, Faculty of Engineering, Kyushu University, Higashi-Ku, Fukuoka 812, Japan

    Kaoru Yamafuji

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

    Tadataka Morishita

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© 1995 Springer-Verlag Tokyo

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Murakami, M., Yoo, SI., Higuchi, T., Oyama, T., Sakai, N., Tanaka, S. (1995). Strong Flux Pinning In Melt-Grown RE123 (RE: Sm, Eu, Gd) Superconductors. In: Yamafuji, K., Morishita, T. (eds) Advances in Superconductivity VII. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68535-7_3

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  • DOI: https://doi.org/10.1007/978-4-431-68535-7_3

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-68537-1

  • Online ISBN: 978-4-431-68535-7

  • eBook Packages: Springer Book Archive

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