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Multifilamentary Superconducting Composites

  • Krishan Kumar Chawla
Part of the Materials Research and Engineering book series (MATERIALS)

Abstract

Multifilamentary composite superconductors started becoming available in the 1970s. These are niobium based (Nb-Ti and Nb3Sn) superconductors. The record high temperature at which a material became superconductor was 23 K and was set in 1974. In 1987, there started appearing reports of superconductivity at temperatures up to 90 or 100 K in samples containing lanthanum, copper, oxygen, and barium or another Ha metal. These new ceramic superconductors have layered perovskite body-centered tetragonal structure and, not surprisingly, are very brittle. There remains an extremely large gap to be bridged between producing a small sample for testing in the laboratory and making a viable commerical product. The Nb-Ti system took 15–20 years between the discovery and the commercial availability. The new high-temperature oxide superconductors hold a great promise and it is quite likely eventually they will also be made into some kind of composite superconductors. Thus, it is quite instructive to review the composite materials aspects of niobium based superconductors. But first a short introduction to the subject of superconductivity is in order.

Keywords

Copper Matrix Critical Magnetic Field Flux Pinning Powder Metallurgy Technique Flux Motion 
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.
    J.E. Kunzler, E. Bachler, F.S.L. Hsu, and J.E. Wernick, Phys. Rev. Lett., 6, 89 (1961).CrossRefGoogle Scholar
  2. 2.
    K. Tachikawa, in Proceedings of the 3rd ICEC, Illife Science and Technology Publishing, Surrey, U.K., 1970.Google Scholar
  3. 3.
    A.R. Kaufmann and J.J. Pickett, Bull. Am. Phys. Soc., 15, 833 (1970).Google Scholar
  4. 4.
    E. Nembach and K. Tachikawa, J. Less Common Met., 19, 1962 (1979).Google Scholar
  5. 5.
    R.M. Scanlan, W.A. Fietz, and E.F. Koch, J. Appl. Phys., 46, 2244 (1975).CrossRefGoogle Scholar
  6. 6.
    K.K. Chawla, Metallography, 6, 55 (1973).CrossRefGoogle Scholar
  7. 7.
    K.K. Chawla, Philos. Mag., 28, 401 (1973).CrossRefGoogle Scholar
  8. 8.
    T. Luhman and M. Suenaga, Appl. Phys. Lett., 29, 1 (1976).CrossRefGoogle Scholar
  9. 9.
    R. Roberge and S. Foner, in Filamentary A15 Superconductors, Plenum Press, New York, 1980, p. 241.CrossRefGoogle Scholar

Suggested Reading

  1. E.W. Collings, Design and Fabrication of Conventional and Unconventional Superconductors, Noyes Publications, Park Ridge, NJ, 1984.Google Scholar
  2. J.W. Ekin, in Materials at Low Temperatures, ASM, Metals Park, OH, 1983, p. 465.Google Scholar
  3. S. Foner and B.B. Schwartz (eds.), Superconducting Materials Science, Plenum Press, New York, 1981.Google Scholar
  4. T. Luhman and D. Dew-Hughes (eds.), Metallurgy of Superconducting Materials, Treatise on Material Science and Technology, vol. 14, Academic Press, New York, 1979.Google Scholar
  5. R.P. Reed and A.F. Clark (eds.), Advances in Cryogenic Engineering Materials, vol. 28, Plenum Press, New York, 1982.Google Scholar
  6. R.M. Scanlan, Ann. Rev. Mater. Sci., 10, 113 (1980).CrossRefGoogle Scholar
  7. M. Suenaga and A.F. Clark (eds.), Filamentary A15 Superconductors, Plenum Press, New York, 1980.Google Scholar

Copyright information

© Springer Science+Business Media New York 1987

Authors and Affiliations

  • Krishan Kumar Chawla
    • 1
  1. 1.Dept. of Materials and Metallurgical EngineeringNew Mexico Institute of Mining and TechnologySocorroUSA

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