Hostname: page-component-8448b6f56d-gtxcr Total loading time: 0 Render date: 2024-04-24T18:03:41.251Z Has data issue: false hasContentIssue false
  • English
  • Français

Hyper- and Hypobaric Processing of T1-Ca-Ba-Cu-O Superconductors

Published online by Cambridge University Press:  28 February 2011

K. C. Goretta ,
J. L. Routbort ,
Donglu Shi ,
J. G. Chen ,
Ming Xu  and
M. C. Hash
K. C. Goretta
Affiliation:
Argonne National Laboratory, Argonne, IL 60439.
J. L. Routbort
Affiliation:
Argonne National Laboratory, Argonne, IL 60439.
Donglu Shi
Affiliation:
Argonne National Laboratory, Argonne, IL 60439.
J. G. Chen
Affiliation:
Argonne National Laboratory, Argonne, IL 60439.
Ming Xu
Affiliation:
Argonne National Laboratory, Argonne, IL 60439.
M. C. Hash
Affiliation:
Argonne National Laboratory, Argonne, IL 60439.
Get access

Abstract

Tl-based superconductors of initial composition Tl:Ca:Ba:Cu equal to 2:2:2:3 and 1:3:1:3 were heated in oxygen at pressures of 104 to 6 x 105 Pa. The 2:2:2:3 composition formed primarily the 2-layer superconductor with zero resistance from 77 to 104 K. The 1:3:1:3 composition formed nearly phase pure 3-layer superconductor with a maximum zero resistance temperature of 120 K. Application of hyperbaric pressure influenced phase purities and transition temperatures slightly; phase purities decreased significantly with application of hypobaric pressures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 365
Copyright
Copyright © Materials Research Society 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Ott, H. R., and Hulliger, F., Physica C 157, 144 (1989).Google Scholar
2 Ginley, D. S., Kwak, J. F., Venturini, E. L., Morosin, B., and Baughman, R. J., Physica C 160, 42 (1989).Google Scholar
3 Gopalakrishnan, I. K., Sastry, P. V. P. S. S., Rajagopal, H., Sequeira, A., Yakhmi, J. V., and Iyer, R. M., Physica C 159, 811 (1989).Google Scholar
4 Goretta, K. C., Shi, D., Malecki, B., Hash, M. C., and Bloom, I., Supercond. Sci. Tech. 2, 192 (1989).Google Scholar
5 Uno, N., Enomoto, N., Tanaka, Y., and Takami, H., Jpn. J. Appl. Phys. 27, L1003 (1988).Google Scholar
6 Balachandran, U., Poeppel, R. B., Emerson, J. E., Johnson, S. A., Lanagan, M. T., Youngdahl, C. A., Shi, D., Goretta, K. C., and Eror, N. G., Mater. Lett. 8. Dec. issue (1989).Google Scholar
7 Karbarz, F. A., Lacy, O. D., Goretta, K. C., Balachandran, U., Shi, D., Chen, J.G., Xu, M., and Hash, M. C., Mater. Res. Bull., in press.Google Scholar
8 Parkin, S. S. P., Lee, V. Y., Engler, E. M., Nazzal, A. I., Huang, T. C., Gorman, G., Savoy, R., and Beyers, R., Phys. Rev. Lett. 60. 2539 (1988).Google Scholar
9 Iyer, R. M., Phatak, G. M., Gangadharan, K., Sastry, M. D., Kadam, R. M., Sastry, P. V. P. S. S., and Yakhmi, J. V., Physica C 160, 155 (1989).Google Scholar
10 Sheng, Z. Z., Sheng, L., Su, H. M., and Hermann, A. M., Appl. Phys. Lett, 53, 2686 (1988).Google Scholar