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Irreversibility and Vortex Glass-Liquid Transition Fields of Silver-Sheathed Bi-2212 Superconducting Tapes

  • T. Matsushita
  • M. Tagomori
  • K. Noguchi
  • M. Kiuchi
  • T. Hasegawa
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 44)

Abstract

The scaling of current-voltage curves is investigated and the irreversibility field and the vortex glass-liquid transition field are obtained for two specimens of multilayered Bi-2212 superconducting tapes with different thicknesses of superconducting layer. The results were compared with the theoretical analysis using the flux creep-flow model in which the distribution of flux pinning strength was taken into account. A good agreement was obtained, although the dependence of the irreversibility field on the thickness of superconducting layer was not obtained since the longitudinal flux bundle size was still shorter than the thickness of superconducting layers, resulting in bulk pinning. This agreement shows that the present, theoretical model describes correctly the phenomena associated with the motion of flux lines under the influence of flux pinning.

Keywords

Critical Current Density Transition Line Solid Symbol Flux Line Flux Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    M. Kiuchi, H. Yamato and T. Matsushita, Longitudinal elastic correlation length of flux lines along the c-axis in superconducting Bi-2212 single crystal, Physica C 269: 242 (1996).ADSCrossRefGoogle Scholar
  2. 2.
    T. Matsushita, M. Kiuchi, H. Yanato, T. Hirano and N. Koshizuka. Longitudinal elastic correlation length of flux lines along the c-axis in superconducting Bi-2212 single crystal in the field range near the peak effect., Phy.sica. C 277: 185 (1997).Google Scholar
  3. 3.
    N. Ihara and T. Matsushita, Effect of flux creep on irreversibility lines in superconductors, Physica C 257: 223 (1996).ADSCrossRefGoogle Scholar
  4. 4.
    K. Noguchi, M. Kiuchi, M. Tagomori, T. Matsushita and T. Hasegawa, Scaling of current-voltage characteristics in superconducting Bi-2212 silver-sheathed tape wires, to be published in “Advances in Superconductivity IX,” Springer-Verlag, Tokyo, 1997.Google Scholar
  5. 5.
    T. Hasagawa, Y. Hikichi, T. Koizumi, A. Imai, H. Kumakura, H. Kitaguchi and K. Togano, Fabrication and properties of Bi2Sr2CaCu2O, multilayer superconducting tapes and coils, IEEE Trans. Appl. Svpercond. 7: 1703 (1997).CrossRefGoogle Scholar
  6. 6.
    M. P. A. Fisher, Vortex-glass superconductivity: a possible new phase in bulk high-To oxides, Phys. Rev. Lett. 62: 1415 (1989).ADSCrossRefGoogle Scholar
  7. 7.
    M. Kiuchi, K. Noguchi, M. Tagomori and T. Matsushita, Scaling of current-voltage curves of Bi-2212 tape wire, IEEE Trans. Appl. Sup ercond. 7: 2114 (1997).CrossRefGoogle Scholar
  8. 8.
    M. Kiuchi, K. Noguchi, T. Matsushita. T. Kato. T. Hikata and K. Sato. Scaling of current-voltage curves in superconducting Bi-2223 silver-sheathed tape wires. Physic°. C 278: 62 (1997).ADSCrossRefGoogle Scholar
  9. 9.
    J. Bardeen and M. J. Stephen, Theory of motion of vortices in superconductors, Phys. Rev. 140: A1197 (1965).CrossRefGoogle Scholar
  10. 10.
    T. Matsushita, T. Fujiyoshi, K. Toko and K. Yamafuji, Flux creep and irreversibility line in high-temperature oxide superconductors. Appl. Phys. Lett. 56: 2039 (1990).ADSCrossRefGoogle Scholar
  11. 11.
    T. Matsushita, On the flux bundle size in weakly pinned superconductors, Physica C 217: 461 (1993).ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • T. Matsushita
    • 1
    • 2
  • M. Tagomori
    • 1
  • K. Noguchi
    • 1
  • M. Kiuchi
    • 1
  • T. Hasegawa
    • 3
  1. 1.Department of Computer Science and ElectronicsKyushu Institute of TechnologyIizuka 820Japan
  2. 2.Department of Electrical and Electronic Systems EngineeringKyushu UniversityHigashi-ku, Fukuoka. 812Japan
  3. 3.Showa Electric Wire and Cable Co. Ltd.Kawasaki-ku Kawasaki 210Japan

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