TITLE

Superconducting oxide films with high transition temperature prepared from metal trifluoroacetate precursors

AUTHOR(S)
Gupta, A.; Jagannathan, R.; Cooper, E. I.; Giess, E. A.; Landman, J. I.; Hussey, B. W.
PUB. DATE
June 1988
SOURCE
Applied Physics Letters;6/13/1988, Vol. 52 Issue 24, p2077
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Superconducting thin films of Y-Ba-Cu oxide have been prepared on yttria-stabilized zirconia substrates using metal trifluoroacetate spin-on precursors. The films exhibit an extremely sharp resistive transition with zero resistance at temperatures as high as 94 K. The superconducting phase is formed by a three-step process: (a) decomposition of the spun-on trifluoroacetate film to the fluorides, (b) conversion of the fluorides to oxides by reacting with water vapor, and (c) annealing followed by slow cooling in oxygen. The properties of the films depend on the amount of conversion of the fluorides by reaction with water. Films which show the presence of some unreacted barium fluoride have strong c-axis normal preferred orientation, with a sharp resistive transition. When all the barium fluoride is converted, the film is more randomly oriented and exhibits a broader transition to zero resistance.
ACCESSION #
9827081

 

Related Articles

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics