Synthesis and characterization of high-T(c) screen-printed Y-Ba-Cu-O films on aluminaThick films of YBa2Cu3O(sub 7-x) have been deposited on highly polished alumina substrates by the screen printing technique. To optimize the post-printing heat treatment, the films were baked at various temperatures for different lengths of time and oxygen-annealed at a lower temperature. The resulting films were characterized by electrical resistivity measurements, X-ray diffraction, and optical and scanning electron microscopy. Properties of the films were found to be highly sensitive to the post-printing thermal treatment. Films baked for 15 min at 1000 C in oxygen were hard, adherent, near single phase, and superconducting with T(sub c) (onset) approx 96 KK, T(sub c) (zero) approx 66 K and Delta T sub c (10 to 90 percent) approx 10 K.
Document ID
19900034871
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bansal, Narottam P. (NASA Lewis Research Center Cleveland, OH, United States)
Simons, Rainee N. (NASA Lewis Research Center Cleveland, OH, United States)
Farrell, D. E. (Case Western Reserve University Cleveland, OH, United States)