Advertisement

Preparation of HgBaCaCuO Polycrystals and Silver Sheathed Tapes by a Two-Zone Technique

  • Christian H. Wolters
  • Kathleen M. Amm
  • Yang Ren Sun
  • Justin Schwartz
Part of the Advances in Cryogenic Engineering Materials book series (ACRE, volume 42)

Abstract

The HgBa2Can-1CunOx (n=1, 2, 3) superconductors exhibit excellent superconducting properties, especially above 77 K. The production of a technical HgBa2CanlCunOx conductor not only requires the synthesis of bulk material with large critical current density (i.e., strong flux pinning and minimal weak links), but also the ability to do so in a form that satisfies the engineering constraints of superconducting applications. Preliminary studies of HgBa2CuO4+x/Ag wires have demonstrated that silver is a chemically compatible sheath material. Also, the chemical stability issue has been resolved with the partial substitution of rhenium for mercury. Here we present the results of our study of the phase formation and chemical stability of Hg1-δReδBa2Ca2Cu3O8+x as well as the preliminary results of a HgBa2CuO4+x/Ag wire study, and thus indicate the technical potential of the Hg-based superconductors.

Keywords

Zone Assembly High Critical Temperature Evacuate Quartz Tube Ceramic Core National High Magnetic Field Laboratory 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    S. N. Putilin, E. V. Antipov and M. Marezio, Nature, 362:226 (1993)CrossRefGoogle Scholar
  2. 2.
    R. L. Meng, L. Beauvais, X. N. Zhang, Z. J. Huang, Y. Y. Sun, Y. Y. Xue and C. W. Chu, Physica C., 216:21 (1993)CrossRefGoogle Scholar
  3. 3.
    A. Schilling, O. Jeandupeux, J. D. Guo and H. R. Ott, Physica C, 216:6 (1993)Google Scholar
  4. 4.
    C. W. Chu, L. Gao, F. Chen, Z. H. Huang, R. L. Meng and Y. Y. Xue., Nature 365:323 (1993)CrossRefGoogle Scholar
  5. 5.
    Y. R. Sun, K. M. Amm and J. Schwartz, IEEE Trans. Applied Superconductivity, vol. 5, June 1995, pp. 1870–1875CrossRefGoogle Scholar
  6. 6.
    L. Krusin-Elbaum, C.C. Tsuei and A. Gupta, Nature 373:679 (1995)CrossRefGoogle Scholar
  7. 7.
    J. I. Shimoyama, private communication, University of Tokyo, March 1995Google Scholar
  8. 8.
    J. Schwartz, C. H. Wolters, K. M. Amm and Y. R. Sun, Physica B (submitted 1995)Google Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Christian H. Wolters
    • 1
  • Kathleen M. Amm
    • 1
    • 2
  • Yang Ren Sun
    • 1
  • Justin Schwartz
    • 1
    • 2
    • 3
  1. 1.National High Magnetic Field LaboratoryTallahasseeUSA
  2. 2.Department of PhysicsFlorida State UniversityTallahasseeUSA
  3. 3.Department of Mechanical EngineeringFAMU/FSU College of EngineeringTallahasseeUSA

Personalised recommendations