Superconductor technology: apparatus – material – process – Processes of producing or treating high temperature... – Process of making wire – tape – cable – coil – or fiber
Patent
1997-06-11
1998-10-27
King, Roy V.
Superconductor technology: apparatus, material, process
Processes of producing or treating high temperature...
Process of making wire, tape, cable, coil, or fiber
505230, 505729, 505740, 505704, H01L 3924
Patent
active
058277986
ABSTRACT:
A method for the production of a superconducting polycrystalline wire rod having all the crystal (a, b, c) axes thereof aligned is disclosed, which consists of a step of arraying a plurality of superconducting whiskers of a composition of Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.8 (Bi-2212 phase) in such a manner as to parallellize the fiber axes of the whiskers and then aligning all the crystal axes of the superconducting whiskers with parallellized fiber axes and a step of heat-treating the resultant whiskers.
REFERENCES:
patent: 5242896 (1993-09-01), Matsubara et al.
patent: 5354921 (1994-10-01), Matsubara et al.
patent: 5550103 (1996-08-01), Motowidlo
Ichiro Matsubara, et al. "Growth of Li-Doped and Dopant-Free Bi-Sr-Ca-Cu-O Superconducting Whiskers" Physica C 167 (1990), pp.503-508.
Ichiro Matsubara, et al. "Growth of Bi-Sr-Ca-Cu-O Based Superconducting Whiskers" Journal of Crystal Growth 110(1991), pp. 973-984.
Ichiro Matsubara, et al. "Growth Mechanism of Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.x uperconducting Whiskers"Journal of Crystal Growth 141(1994), pp. 131-140.
Ichiro Matsubara, et al. "Preparation of Fibrous Bi(Pb)-Sr-Ca-Cu-O Crystals and Their Superconducting Properties in a Bending State" Japanese Journal of Applied Physics vol. 28, No. 7, Jul. (1989), pp. L 1121-L 1124.
Funahashi Ryoji
Ishikawa Hiroshi
Matsubara Ichiro
Ueno Kazuo
Agency of Industrial Science and Technology
King Roy V.
Ministry of International Trade & Industry
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