HIGH STRENGTH MONO-AND MULTI-FILAMENT HIGH TEMPERATURE SUPERCONDUCTORS FOR HIGH FIELD APPLICATIONS

HIGH TEMPERATURE 2212 AND 2223 BISMUTH STRONTIUM CALCIUM COPPER OXIDE (BSCCO) SUPERCONDUCTORS HAVE BEEN FABRICATED IN PRACTICAL CONDUCTOR FORM AND HAVE DEMONSTRATED OUTSTANDING POTENTIAL FOR LOW TEMPERATURE (4 TO 20 K) OPERATION FOR DEVICE APPLICATIONS. PRELIMINARY MONOCORE TAPE DESIGNS HAVE ALREADY SHOWN CRITICAL CURRENT DENSITIES EXCEEDING 2000 A/MM(2) AT 4.2 K AND MAGNETIC FIELDS UP TO 30 TESLA. THIS PROJECT IS DETERMINING THE FEASIBILITY OF EXTENDING THESE CRITICAL CURRENT ACHIEVEMENTS AND OBTAINING EVEN BETTER PROPERTIES IN MONOFILAMENT AND MULTIFILAMENT CONDUCTORS HAVING IMPROVED STRENGTH AND STRAIN TOLERANCE IN PRACTICAL FORMS. THE PHASE I PROJECT WILL DESIGN AND FABRICATE MULTIFILAMENT ARRANGEMENTS FROM THE TWO HIGH TEMPERATURE SUPERCONDUCTORS, AND WILL EXAMINE THESE ARRANGEMENTS FOR UNIFORMITY, THICKNESS, TEXTURE, AND DENSITY.