TITLE

Oriented high-temperature superconducting Bi-Sr-Ca-Cu-O thin films prepared by ion beam deposition

AUTHOR(S)
Lorentz, Robert D.; Sexton, J. H.
PUB. DATE
October 1988
SOURCE
Applied Physics Letters;10/24/1988, Vol. 53 Issue 17, p1654
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
High-temperature superconducting Bi-Sr-Ca-Cu-O thin films have been prepared by ion beam sputter deposition. Films near the 2:2:1:2 and 4:3:3:4 compositions were deposited onto single-crystal MgO [100] substrates and annealed between 825 and 880 °C. Films with composition Bi2.00Sr2.09Ca0.75Cu2.44Ox have a transition beginning at approximately 85 K, with Tc(R=0) reached at 75 K. For films with composition Bi4.00Sr3.12Ca3.03Cu4.56Ox, a significant drop in the resistance is observed at about 110 K, with Tc(R=0) between 63 and 67 K. Films of both compositions have strong preferential c-axis orientation normal to the film plane.
ACCESSION #
9828535

 

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