Syntactic intergrowth problems with BCSCO and fabrication difficulties therefromEDXS 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.
Document ID
19890044347
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Morgan, P. E. D. (Rockwell International Science Center Thousand Oaks, CA, United States)
Ratto, J. J. (Rockwell International Science Center Thousand Oaks, CA, United States)
Housley, R. M. (Rockwell International Science Center Thousand Oaks, CA, United States)
Porter, J. R. (Rockwell International Science Center Thousand Oaks, CA, United States)