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Synchrotron radiation X-ray diffraction analysis for Bi-based oxide superconducting wire

  • S. Uemura (a1), J. Iihara (a1), Y. Saito (a1), K. Yamaguchi (a2), J. Matsumoto (a1), K. Yamazaki (a3), M. Kikuchi (a3), T. Nakashima (a3), S. Kobayashi (a3), N. Ayai (a4), K. Hayashi (a4) and K. Sato (a5)...

Abstract

The Bi-based oxide superconducting wire is one of the most promising materials for practical uses such as electric power transmission, electromagnets and so on. For the higher performances required in these applications, it is necessary to increase the critical current (Ic). We have carried out synchrotron radiation X-ray diffraction analysis to improve our manufacturing processes and thus to achieve higher Ic. We have performed in situ X-ray diffraction measurements during the sintering and cooling processes, and observed the decrease of Bi-2223(=(Bi,Pb)2Sr2Ca2Cu3Ox) phase during the cooling process. We have also evaluated the distribution of the crystal orientation in whole wire thickness, by measuring the rocking curves. We have observed that the distribution of the crystal orientation is improved by a refinement of the process conditions.

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Corresponding author

Email address for correspondence: uemura-shigeaki@sei.co.jp

References

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Ayai, N., Kato, T., Fujikami, J., Fujino, K., Kobayashi, S., Ueno, E., Yamazaki, K., Kikuchi, M., Ohkura, K., Hayashi, K., Sato, K. & Hata, R. 2006a DI-BSCCO wires by controlled over pressure sintering, J. Phys. Conf. Ser. 43, 4750.
Ayai, N., Kikuchi, M., Yamazaki, K., Yamade, T., Hata, Y., Sato, K., Hayashi, K., Kato, T., Fujikami, J., Kobayashi, S., Ueno, E. & Fuijno, K. 2006b Achievement of High-Temperature Superconducting Wire with Critical Current Exceeding 200A, SEI Tech. Rev. 63, 5864.
Ayai, N., Kato, T., Fujikami, J., Kobayashi, S., Kikuchi, M., Yamazaki, K., Yamade, S., Ishida, T., Tatamidani, K., Hayashi, K., Sato, K., Hata, R., Kitaguchi, H., Kumakura, H., Osamura, K. & Shimoyama, J. 2008 DI-BSCCO wire with Ic over 200A at 77K, J. Phys. Conf. Ser. 97, 012112.
Iihara, J., Yamaguchi, K., Matsumoto, J., Saito, Y., Yamazaki, K., Yamade, S., Kato, T., Kikuchi, M., Ayai, N. & Sato, M. 2008 Development of a method using SPring-8 to analyze sintering reactions of Bi-based oxide superconducting wires, SEI Tech. Rev. 66, 6872.
Kato, T., Fujikami, J., Kobayashi, S., Yamazaki, K., Ayai, N., Fujino, K., Ueno, E., Kikuchi, M., Yamade, S., Hayashi, K. & Sato, K. 2006 Development of Drastically Innovative BSCCO (DI-BSCCO) Wire, SEI Tech. Rev. 62, 1014.

Synchrotron radiation X-ray diffraction analysis for Bi-based oxide superconducting wire

  • S. Uemura (a1), J. Iihara (a1), Y. Saito (a1), K. Yamaguchi (a2), J. Matsumoto (a1), K. Yamazaki (a3), M. Kikuchi (a3), T. Nakashima (a3), S. Kobayashi (a3), N. Ayai (a4), K. Hayashi (a4) and K. Sato (a5)...

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