Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1988-05-13
1991-07-02
Dixon, Jr., William R.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505738, 505785, H01B 1200
Patent
active
050285858
ABSTRACT:
Two or more superconductors are reacted together to form a non-superconducting phase encapsulating a residual superconducting phase. For example YBa.sub.2 Cu.sub.3 oxide is reacted with Bi.sub.2 Sr.sub.2 CaCu.sub.2 oxide to form a superconducting product containing a novel non-superconducting oxide of Y, Bi, and Ba. A superconducting YBa.sub.2 Cu.sub.3 oxide remains as an interconnected phase throughout the product. The new non-superconducting phase largely encapsulates and insulates the superconducting phase.
REFERENCES:
patent: 4880771 (1989-06-01), Cava et al.
patent: 4894361 (1989-07-01), Subramanian
Franck et al. "Supercono in Systems of Comp. (MxY.sub.1-x Ba.sub.2 Cu.sub.3 O.sub.6.5-8) M.dbd.AL, GA, Bi", Reviews of Solid State Science, vol. 1, No. 2, 1987, pp. 405-410.
Szytula et al., "Superconducting Phases in the Y--Ba--Cu--Bi System", Acta Physica Polonica, vol. A73 (1988), pp. 169-171.
Richert et al., "Atomic Subs. in YBa, Cu.sub.3 O.sub.7 : Modification of the Electronic Structure", American Institute of Physics 1988, pp. 277-283.
G. F. Holland and A. M. Stacy, Accounts of Chemical Research, 1988, 21, pp. 8-15.
Capella Steven
Dixon Jr. William R.
Gallo Chris
McDowell, Jr. William W.
W. R. Grace & Co.,-Conn.
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