TITLE

Rapid thermal annealing of high Tc superconducting thin films formed by metalorganic deposition

AUTHOR(S)
Mantese, J. V.; Hamdi, A. H.; Micheli, A. L.; Chen, Y. L.; Wong, C. A.; Johnson, J. L.; Karmarkar, M. M.; Padmanabhan, K. R.
PUB. DATE
May 1988
SOURCE
Applied Physics Letters;5/9/1988, Vol. 52 Issue 19, p1631
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Thin-film superconductors of Y-Ba-Cu and Yb-Ba-Cu have been formed by the nonvacuum method of metalorganic deposition (MOD). The films produced in this manner were homogeneous and free of voids and cracks over large dimensions. A two-step rapid thermal annealing of the MOD films, in oxygen, at 850 °C for 60 s followed by a second annealing at 920 °C for 30 s enhanced grain growth in the films and reduced the effects of substrate interaction. Preferred epitaxial grain growth, in the high Tc films, with the c axis both perpendicular and parallel to the substrate surface, occurred on <100> SrTiO3. Both the Y-Ba-Cu and Yb-Ba-Cu films showed superconducting onset temperatures above 90 K and zero resistance at 86 K.
ACCESSION #
9826710

 

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