Superconducting thin film and a method for preparing the same
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United States of America Patent
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Sep 19, 2000
Issued Date -
N/A
app pub date -
May 20, 1998
filing date -
Jul 6, 1987
priority date (Note) -
Expired
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Abstract
A high-temperature superconducting thin film of compound oxide selected from the group consisting of: Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x, Ho.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x, Lu.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x, Sm.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x, Nd.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x, Gd.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x, Eu.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x, Er.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x, Dy,Ba.sub.2 Cu.sub.3 O.sub.7-x, Tm.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x, Yb.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x La.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x, (La, Sr).sub.2 CuO.sub.4-x, which is deposited on a substrate of sapphire, with the outer surface of the high-temperature superconducting thin film being covered with a protective crystalline film of SrTiO.sub.3.
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