Method of manufacturing superconducting wire

A method of manufacturing a superconducting wire comprising:

• a step of forming an oxide superconducting film on a support substrate, wherein
• the step of forming the oxide superconducting film includes performing a step of laminating a superconducting layer of an oxide superconducting material for at least one time,
• the step of laminating the superconducting layer includes a pyrolyzed film forming step, a polycrystallization step, and a sintering heat treatment step,
• the pyrolyzed film forming step includes performing a coating film forming step and a pyrolyzing heat treatment step for at least one time,
• in the coating film forming step, a solution of a metal organic compound in an organic solvent is applied to form a coating film, and the metal organic compound is a compound of a metal element constituting the oxide superconducting material and an organic component,
• in the pyrolyzing heat treatment step, the coating film is heat-treated to thermally decompose the organic component so as to form a pyrolyzed film,
• in the polycrystallization step, the pyrolyzed film is heat-treated to form a polycrystal layer containing polycrystals of the oxide superconducting material, and
• in the sintering heat treatment step, the polycrystal layer is heat-treated to orient the polycrystals so as to form the superconducting layer.