TITLE

Composition dependence of superconducting properties in Bi2(Sr1-xCax)n+1CunOy (n=2, 3) thin films

AUTHOR(S)
Satoh, T.; Yoshitake, T.; Kubo, Y.; Igarashi, H.
PUB. DATE
September 1988
SOURCE
Applied Physics Letters;9/26/1988, Vol. 53 Issue 13, p1213
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Thin films of the Bi2(Sr1-xCax)n+1CunOy (n=2, 3) system were prepared on (100)MgO substrates by coevaporation of Bi2O3, Sr-Ca alloy, and Cu metal. The lattice constant of the c axis of the low Tc (∼85 K) phase (n=2) decreased with increasing Ca composition x. The superconducting transition temperatures of both the low Tc phase and high Tc (∼110 K) phase (n=3) decreased with increasing x. These tendencies indicated that both the low Tc phase and the high Tc phase have a mutual solubility between Ca and Sr atoms in this Bi system and that the Tc ’s of these two phases are related to the c-axis lattice constant.
ACCESSION #
9828191

 

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