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Preparation of Y-BA-CU Oxide Superconducting Composite Tapes by a Diffusion Process

  • K. Tachikawa (a1), M. Sugimoto (a2), N. Sadakata (a2) and O. Kohno (a2)

Extract

Since discovery of the Y-Ba-Cu oxide compound showing superconductivity above liquid nitrogen temperature, intensive study has been under way to clarify nature of the high Tc oxides[l-4]. Much efforts were also made in the field of superconductor applications. A number of studies have been carried out by a powder metallurgical process of Y-Ba-Cu oxide compound wires, although, obtained critical current densities were still low at liquid nitrogen temperature[5–6]. Other techniques for wire fabrication is also being attempted[7–9]. In this study, Y-Ba-Cu oxide superconducting composite tapes were prepared by a diffusion process, which is one of the promising methods to obtain a high critical current density.

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1. Wu, M. K., Ashburn, J. R., Torng, C. J., Hor, P. H., Meng, R. L., Gao, L., Haung, Z. J., Wang, Y. Q. and Chu, C. W.: Phys. Rev. Lett., 58(1987) 908.
2. Hi kami, S., Kagoshima, S., Komiyama, S., Hirai, T., Minami, H. and Masumi, T. : Jpn. J. Appl. Phys., 26(1987)L347.
3. Moodenbaugh, A. R., Suenaga, M., Asano, T., Shelton, R. N., Ku, H. C., McCallum, R. W. and Klavins, P.: Phys. Rev. Lett., 58(1987) 1885.
4. Murphy, D. W., Sunshine, S., van Dover, R. B., Cava, R. J., Batlogg, B., Zahurak, S. M. and Schneermeyer, L. F.: Phys. Rev. Lett., 58(1987) 1888.
5. Kohno, O., Ikeno, Y., Sadakata, N., Aoki, S., Sugi moto, M. and Nakagawa, M.: Jpn. J. Appl. Phys., 26(1987) 1653.
6. Yamada, Y., Fukushima, N., Nakayama, S., Yoshino, H. and Murase, S.: Jpn. J. Appl. Phys. 26(1987)L865.
7. Yurek, G. J., Varder Sande, J. B., Wang, W. X. and Ruman, D. A.: Submitted to Metall. Trans. A.
8. Yurek, G. J., Varder Sande, J. B., Wang, W. X. and Ruman, D. A.: Submitted to J. Electrochem. Soc.
9. Kumakura, H., Yoshida, Y. and Togano, K. : Jpn. J. Appl. Phys. 26(1987) L1172.

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