ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.99706
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