Actions for Melt processing of the Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub y} superconductor in oxygen and argon atmospheres [electronic resource].

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Melt processing of the Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub y} superconductor in oxygen and argon atmospheres [electronic resource].

Published
Arlington, Va. : National Science Foundation (U.S.), 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
5 pages : digital, PDF file
Additional Creators
Argonne National Laboratory, National Science Foundation (U.S.), and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Solidification and subsequent annealing of Bi₂Sr₂CaCu₂O{sub y} (2212) in oxygen and argon atmospheres were investigated in order to identify alternative processing routes for controlling microstructures and superconducting properties. In addition to 2212, several other phases formed on cooling in O₂ and did not disappear upon subsequent annealing. Crystallization in Ar resulted in a divorced eutetic structure of Bi₂Sr{sub 3-x}CaₓO{sub y} and Cu₂O/CuO. The superconductor was formed on subsequent anneals. Samples melted in Ar and then annealed generally possessed a more uniform microstructure compared with samples that were melted in oxygen and annealed. Compositional measurements of the 2212 phase suggest that CaO segregation in the melt may be minimized with an overall composition such as Bi{sub 2.15}Sr₂Ca{sub 0.85}Cu₂O{sub y}.
Report Numbers
E 1.99:anl/cp--77532
E 1.99: conf-920802--31
conf-920802--31
anl/cp--77532
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
08/01/1992.
"anl/cp--77532"
" conf-920802--31"
"DE93002999"
": Contract DMR-8809854"
Applied superconductivity conference,Chicago, IL (United States),23-28 Aug 1992.
Miller, D.J.; Holesinger, T.G.; Chumbley, L.S.
Funding Information
W-31109-ENG-38
W-7405-ENG-82
View MARC record | catkey: 14063320