Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1990-05-14
1992-09-22
Ryan, Patrick J.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505701, 505702, 505703, 505704, 428688, 428930, 428457, 428901, 29899, B32B 900
Patent
active
051496810
ABSTRACT:
A pre-existing superconductor ceramic which is bonded to a substrate is passed through a relatively short heating zone to melt the ceramic superconductor. As the superconductor is subsequently cooled after it has passed through the heating zone, a temperature gradient is established along the superconductor which causes the melted crystals to renucleate and grow along and parallel to the temperature gradient. The resulting crystalline structure exhibits improved superconducting properties when the superconductor is placed in the presence of a magnetic field. For appropriate applications, the substrate can be formed as a wire.
REFERENCES:
patent: 4931424 (1990-06-01), Henty
patent: 4948779 (1990-08-01), Keur et al.
patent: 4966142 (1990-10-01), Zimmerman et al.
Mat. Res. Soc. Symp., vol. 138 (1989) Gai et al., p. 143-ff, Synthesis, Microstructive & Local Chemistry of SC BiSrCuCuO thin film.
Applied Phys. Letters, vol. 53, No. 26, Dec. 26, 1988, pp. 2677-2679, Simon et al.
Lieber Albert J.
Ohkawa Tihiro
Stephens Richard B.
General Atomics
Powers T. A.
Ryan Patrick J.
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