Patent ID: 7763569

Claim:
A process of forming a band-shaped high temperature superconductor including a metal substrate and a high temperature superconductor layer (HTSL) having a multi-layer architecture formed of at least two precursor layers, the process comprising: (a) forming a first precursor solution comprising a first solvent; (b) applying the first precursor solution to the metal substrate; (c) drying and pyrolyzing the first precursor solution to form a first superconductor precursor layer; (d) forming a second precursor solution comprising a second solvent; (e) applying the second precursor solution to the first superconductor precursor layer; (f) drying and pyrolyzing the second precursor solution to form a second superconductor precursor layer; and (g) thermally treating the precursor layers to form the HTSL, wherein a fluorine concentration of the first precursor solution is less than a fluorine concentration of the second precursor solution.