NASA NTRS · 19890044347
Syntactic intergrowth problems with BCSCO and fabrication difficulties therefrom
Abstract
EDXS performed on isolated particles of the Bi-Ca-Sr-Cu-O high-temperature ceramic superconductor has verified the presence of significant elemental exchange between the Ca and Sr, and, to a lesser extent, between Cu and Bi. Two primary preparations, identified as primarily 24.4 A and 30.6 A, respectively, are identified. The Cu:Bi ratio in the 30.6 A material is approximately 1:1 for most particles, although only a few particles of the nominally 24.4 A material have the expected 1:2 ratio. No unequivocal assignment of atomic composition to the predominantly 24.4 A or 30.6 A appears possible, if major syntactic problems are present.
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Morgan, P. E. D., Ratto, J. J., Housley, R. M., Porter, J. R.. 1988-01-01. Syntactic intergrowth problems with BCSCO and fabrication difficulties therefrom. https://ntrs.nasa.gov/citations/19890044347
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