Improved methods and compositions for fabrication of superconducting wire

A method for fabricating a superconducting wire, the method comprising the steps of:

• compressing a mixture of a superconductor powder with a silver nanopowder to produce a textured-powder core by compressing the mixture;
• inserting the textured-powder core into a cylinder;
• sealing the cylinder by inserting plugs into ends of the cylinder;
• and
• processing the cylinder to form a wire.

A composite wire comprising:

• a first sheet;
• a plurality of cores arranged on the first sheet parallel to one another;
• a second sheet placed on top of the plurality of cores to form a composite sheet that comprises the first sheet, the plurality of cores, and the second sheet;
• a plurality of channels formed between adjacent cores and through the composite sheet;
• and
• wherein the composite wire comprises a tube formed by rolling up the composite sheet.