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Bi-Sr-Ca-Cu-oxide superconducting thin films deposited by dc magnetron sputtering

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.99598· OSTI ID:5132008

Thin films of the high-temperature superconductor Bi-Sr-Ca-Cu-oxide were deposited by dc magnetron sputtering onto various substrates. Films deposited on (100) MgO substrates achieved zero resistance between 78 and 82.5 K depending upon the annealing conditions. The best films were produced with a quick post-anneal in oxygen at 870 /sup 0/C followed by a slower anneal in air at the same temperature. The composition of the sputtered films was uniform within +- 3% over an area 40 mm in radius, and films deposited at 15 and 40 mm from the center of deposition both exhibited high T/sub c/ transitions.

Research Organization:
Department of Physics, University of British Columbia, Vancouver, B. C. V6T 2A6, Canada
OSTI ID:
5132008
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 52:23; ISSN APPLA
Country of Publication:
United States
Language:
English