SUPERCONDUCTOR COATED CONDUCTORS WITH REDUCED A.C. LOSS

• Main Authors: LI, QI, MALOZEMOFF, ALEXIS, P, OTTO, ALEXANDER, BUCKLES, WARREN, ELLIOT, RILEY, GILBERT, N., JR, SNITCHLER, GREGORY, L
• Format: Patent
• Language: English; French
• Published: 06.09.2002
• Edition: 7
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CABLES; CASTING; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CONDUCTORS; CRYSTAL GROWTH; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRICITY; INSULATORS; MACHINE TOOLS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; SOLDERING OR UNSOLDERING; TRANSPORTING; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; WELDING; WORKING BY LASER BEAM; WORKING METALLIC POWDER

Coated conductors (40) and methods of fabricating the same are provided, for minimizing a.c. losses during operation. Multilayered articles include multiple conductive layers (46, 47) in electronic communication through interlayer connections (54, 60). Conductive paths (50) are fabricated on the conductive layers and through interlayer connections between these layers so that current travels the length of the conductors with minimal a.c. losses. Preferably at least one of the superconductive layers (46, 47) is formed epitaxially on a substrate (42) covered with a biaxially textured buffer layer (44), the interlayer connections (54, 60) traversing an insulating or highly resistive layer (49). L'invention porte sur des conducteurs revêtus et sur leurs procédés de fabrication visant à minimiser les pertes en courant alternatif en fonctionnement. Des articles multicouches comportent plusieurs couches conductrices communiquant de manière électronique par des connexions entre les couches. Des chemins conducteurs sont formés sur les couches conductrices et dans les connexions intercouches entre ces couches de sorte que le courant se déplace le long des conducteurs avec des pertes minimales en courant alternatif.