Process for producing electrical conductor

A process for producing an electrical conductor, which comprises a laminate-forming step of forming a precursor laminate having a first precursor layer and a second precursor layer laminated in an optional order on a substrate, and an annealing step of heating the precursor laminate in a reducing atmosphere for annealing to form a metal oxide layer from the first precursor layer and the second precursor layer, wherein:

• the first precursor layer is a titanium oxide layer made of titanium oxide containing at least one dopant selected from the group consisting of Nb, Ta, Mo, As, Sb, Al, Hf, Si, Ge, Zr, W, Co, Fe, Cr, Sn, Ni, V, Mn, Tc, Re, P and Bi, and the titanium oxide layer is a titanium oxide layer which, when subjected to a single layer annealing test, becomes a titanium oxide layer containing a polycrystal which is free from a rutile type crystal, and
• the second precursor layer is an amorphous titanium oxide layer made of titanium oxide containing at least one dopant selected from the above group, and the amorphous titanium oxide layer is an amorphous titanium oxide layer which, when subjected to a single layer annealing test, becomes a titanium oxide layer containing a polycrystal which contains a rutile type crystal.