Patent ID: 8658571

Claim:
A method for the wet-chemical production of a textured HTSC layer on a carrier having an uppermost layer that is textured, the method comprising: producing an HTSC precursor solution by dissolving a rare earth element (RE), barium (Ba), and copper (Cu) salts, wherein RE is yttrium (Y), and the HTSC precursor solution is free from fluorine; applying the HTSC precursor solution to a carrier to form a high temperature superconductor (HTSC) precursor layer; heat treating the HTSC precursor layer by: heating the HTSC precursor layer at first temperature T Z above the decomposition temperatures of anions of the copper salts to produce barium carbonate and copper oxide, and thereafter heating the HTSC precursor layer at a second temperature T S at which the barium carbonate and the copper oxide form an at least partial melt in a binary reaction and which lies beneath the temperature at which RE 2 BaCuO x is formed, wherein the HTSC precursor layer is in an atmosphere with an oxygen content of less than 20% while subjected to the second temperature T S .