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Phase Chemistry and Compositional Variability During Processing in the Bi-Pb-Ca-Sr-Cu-O System

Published online by Cambridge University Press:  21 February 2011

Kenneth B. Schwartz,
Mark Thompson,
Derek Leong and
Richard McConville
Kenneth B. Schwartz
Affiliation:
Raychem Corporation, 300 Constitution Drive, Menlo Park, CA 94025
Mark Thompson
Affiliation:
Raychem Corporation, 300 Constitution Drive, Menlo Park, CA 94025
Derek Leong
Affiliation:
Raychem Corporation, 300 Constitution Drive, Menlo Park, CA 94025
Richard McConville
Affiliation:
Raychem Corporation, 300 Constitution Drive, Menlo Park, CA 94025
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Abstract

The formation of superconducting materials in the Bi-Pb-Ca- Sr-Cu-O system was studied to determine the processing parameters and mechanisms responsible for the achievement of superconductivity above 100 K. Non-stoichiometry in the 3-layer superconducting phase (Tc≃100 K) is apparently necessary for formation and appears to be manifested by large vacancy concentrations on the non-Cu-layers of the structure.

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References

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