Superconductor technology: apparatus – material – process – High temperature – per se – Copper containing
Patent
1992-12-18
1996-11-05
Lieberman, Paul
Superconductor technology: apparatus, material, process
High temperature , per se
Copper containing
505234, 505780, 505785, 505781, 252521, 428 54, 428212, 428688, 117 78, 117944, H01B 1200, C04B 35505, H01L 3912
Patent
active
055717764
ABSTRACT:
Enlargement of a crystal of a bulk oxide superconductor of REBa.sub.2 Cu.sub.3 O.sub.7-x, wherein RE is at least one of Y and rare earth elements, is effected by three dimensionally arranging layers of REBa.sub.2 Cu.sub.3 O.sub.7-x with a different RE in the order of decreasing (123) phase formation temperatures from the center outward, or by forming a stack of layers of RE Ba.sub.2 Cu.sub.3 O.sub.7-x with a different RE in the order of decreasing (123) phase formation temperatures; the size of the layer being enlarged along with a decrease in the (123) phase formation temperature.
REFERENCES:
patent: 5084436 (1992-01-01), Morimoto
Morita "Quench and Melt Growth (QMG) process for . . . " Advances in Superconductivity III ISS '90 proceedings, Nov. 6-9, 1990; pp . 733-736.
M. Morita et al. "Quench and Melt Growth (QMG) Process for Large Bulk Superconductor Fabrication", Advances in Superconductivity III, Springer-Verlag, Tokyo, 1990, pp. 733-736.
Kopec M.
Lieberman Paul
Nippon Steel Corporation
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