Abstract
The measurements of electrical properties and X-ray structural analysis were made for sintered composite materials prepared by mixing the powders of the ceramic superconductor YBa2Cu3O7−x (YBCO) and the powders of the pure metal element M with with M = Ni, Cu and Ag at 50 vol% proportions. The superconducting and mechanical properties were studied further on the YBCO-Ag system in the wide volume fractions 0 to 92%Ag. The onset of the superconductivity is found to occur even for samples containing more than 80 vol % Ag. The value of the critical current density is increased initially by adding silver. The mechanical strength against fracture is also improved. The X-ray structural analysis coupled with scanning electron micrographs revealed that silver and YBCO remain intact after sintering and that fine YBCO particles form continuous networks around homogeneously distributed silver particles. This explains well both superconducting and mechanical properties in the present YBCO-Ag composite system.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
O. Kohno, Y. Ikeno, N. Sadakata andK. Goto,Jpn J. Appl. Phys. 27 (1988) L77.
R. Flükiger, T. Müller, W. Goldacker, T. Wolf, E. Seibt, I. Apfelstedt, H. Küpfer andW. Schauer,Physica C 153-155 (1988) 1574.
S. Jin, R. C. Sherwood, T. H. Tiefel, G. W. Kammlott, R. A. Fastnacht, M. E. Davies andS. M. Zahurak,Appl. Phys. Lett. 52 (1988) 1628.
A. Ono andY. Ishizawa,Jpn J. Appl. Phys. 26 (1987) L1043.
Y. Saito, T. Noji, A. Endo, N. Higuchi, K. Fujimoto, T. Oikawa, A. Hattori andK. Furuse,ibid. 26 (1987) L832.
V. Plechacek, V. Landa, Z. Blazek, J. Sneidr, Z. Trejvalova andM. Cermak,Physica C 153-155 (1988) 878.
D. Pavuna, H. Berger, J. -L. Tholence, M. Affronte, R. Sanjines, A. Dubas, Ph. Bugnon andF. Vasey,ibid. 153-155 (1988) 1339.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Nishio, T., Itoh, Y., Ogasawara, F. et al. Superconducting and mechanical properties of YBCO-Ag composite superconductors. J Mater Sci 24, 3228–3234 (1989). https://doi.org/10.1007/BF01139045
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01139045