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Synthesis of superconducting films of the Y-Ba-Cu-O system by a screen printing method

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.98704· OSTI ID:6141243
A screen printing method has been used to deposit superconducting films of Y-Ba-Cu-O materials on Al/sub 2/O/sub 3/ substrates. The electrical resistivity, microstructure, and adhesion of these films are highly sensitive to the post-printing heat treatment. Films heat treated at 950 /sup 0/C and below are poorly adherent, whereas those annealed above 1000 /sup 0/C undergo phase separation to Y/sub 2/Cu/sub 2/O/sub 5/ and BaCuO/sub 2/ and also react with the substrate. Nearly single phase, highly adherent, and smooth films showing a zero resistance state at 79 K have been synthesized by optimizing the annealing conditions.
Research Organization:
Department of Materials Science and Engineering, University of California, Los Angeles, California 90024
OSTI ID:
6141243
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 51:16; ISSN APPLA
Country of Publication:
United States
Language:
English