Patent ID: 7737086

Claim:
Method for producing a superconductive electrical conductor having a circular cross section, in which a layer of an yttrium-barium-copper oxide (YBCO) is applied as a superconductive material onto a textured metal base after prior application of a buffer layer, and is subjected to a heat treatment, said method comprising the steps of: initially applying an interlayer of a metallic material, which is compatible with the structure of a buffer layer suitable for the application of YBCO, all around onto an elongate metal support; processing the support provided with the interlayer so that predetermined texturing is imparted to the interlayer as a metal base for the buffer layer; applying a ceramic buffer layer to the interlayer in a thickness between 100 nm and 200 nm; applying, all around, the layer of superconductive YBCO material, onto the buffer layer previously applied thereon; and carrying out the heat treatment.