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Glass-Derived Superconductive CeramicCritical superconducting-transition temperature of 107.2 K observed in specimen made by annealing glass of composition Bi1.5Pb0.5Sr2Ca2Cu3Ox for 243 h at 840 degrees C. PbO found to lower melting temperature and viscosity of glass, possibly by acting as fluxing agent. Suggested partial substitution of lead into bismuth oxide planes of crystalline phase having Tc of 110 K stabilizes this phase and facilitates formation of it.
Document ID
19920000088
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Bansal, Narottam P. (NASA Lewis Research Center, Cleveland, OH.)
Farrell, D. E. (NASA Lewis Research Center, Cleveland, OH.)
Date Acquired
August 15, 2013
Publication Date
February 1, 1992
Publication Information
Publication: NASA Tech Briefs
Volume: 16
Issue: 2
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
LEW-15005
Accession Number
92B10088
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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