Journal of Materials Science

, Volume 26, Issue 4, pp 1056–1060 | Cite as

Grain growth enhancement in silver-doped YBa2Cu3O7−x superconductor

  • G. Kozlowski
  • S. Rele
  • D. F. Lee
  • K. Salama


The effects of silver addition on the microstructural and superconducting properties of YBa2Cu3O7−x (YBCO) have been investigated. It was found that the microstructure of silver-doped YBCO samples is characterized by highly oriented platelet-like grains (up to 3 mm × 0.5 mm × 15 μm). The superconducting transition temperatureTitc (R= 0) is decreased with increasing wt% of silver. The critical transport density (JcT) is, however, found to be improved (up to two orders of magnitude) in the doped materials (JitcT (T= 77 K andH = 0 T) = 1250 Acm−2). It is believed that the addition of silver lowers the melting temperature of the system and thereby enhances the decomposition of the compound and promotes grain growth during solidification.


Polymer Microstructure Melting Temperature Superconducting Property Growth Enhancement 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    M. K. Wu, J. R. Ashburn, C. J. Torng, P. H. Hor, R. L. Meng, L. Gao, Z. J. Huang, Y. Q. Wang andC. W. Chu,Phys. Rev. Lett. 58 (1987) 908.CrossRefGoogle Scholar
  2. 2.
    K. Salama, V. Selvamanickam, L. Gao andK. Sun,Appl. Phys. Lett. 54 (1989) 2352.CrossRefGoogle Scholar
  3. 3.
    S. Jin, T. H. Tiefel, R. C. Sherwood, M. E. Davis, R. B. Van Dover, G. W. Kammlott, R. A. Fastnacht andH. D. Keith,ibid. 52 (1988) 2074.CrossRefGoogle Scholar
  4. 4.
    T. H. Tiefel, S. J. Jin, R. C. Sherwood, M. E. Davis, G. W. Kammlott, P. K. Gallagher, D. W. Johnson, Jr, R. A. Fastnacht andW. W. Rhodes,Mater. Lett. 7 (1989) 363.CrossRefGoogle Scholar
  5. 5.
    C. Y. Huang, H. H. Tai andM. K. Wu,Mod. Phys. Lett. B3 (1989) 525.CrossRefGoogle Scholar
  6. 6.
    J. W. Ekin, A. I. Braginski, A. J. Panson, M. A. Janocko, D. W. Capone II, N. J. Zaluzec, B. Fandermeyer, O. F. De Lima, M. Hong, J. Kwo andS. H. Liou,J. Appl. Phys. 62 (1987) 4821.CrossRefGoogle Scholar
  7. 7.
    T. Nishio, Y. Itoh, F. Ogasawara, M. Suganuma, Y. Yamada andU. Mizutani,J. Mater. Sci. 24 (1989) 3228.CrossRefGoogle Scholar
  8. 8.
    W. D. Macdonald, A. J. Otto, E. J. Zwartz, B. A. Judd andE. Batalla, in “Processing and Applications of High Titc Superconductors”, edited by W. E. Mayo (The Metallurgical Society, Rutgers University, N.J. 1988) p. 227.Google Scholar
  9. 9.
    T. Aselage andK. Keefer,J. Mater. Res. 3 (1988) 1279.CrossRefGoogle Scholar
  10. 10.
    D. L. Kaiser, F. Holtzberg, M. F. Chisholm andT. K. Worthington,J. Crystal Growth 85 (1987) 593.CrossRefGoogle Scholar

Copyright information

© Chapman and Hall Ltd 1990

Authors and Affiliations

  • G. Kozlowski
    • 1
  • S. Rele
    • 1
  • D. F. Lee
    • 1
  • K. Salama
    • 1
  1. 1.Department of Mechanical EngineeringTexas Center for Superconductivity at the University of HoustonHoustonUSA

Personalised recommendations