Method of producing a material of oxide superconductor, method of producing an oxide superconducting wire, and superconducting apparatus

A method of producing an oxide superconducting wire, the method comprising the steps of:

• (a) producing a material of an oxide superconductor by using a method of producing a material of an oxide superconductor, comprising the steps of:
• (a1) in a solution, ionizing a material containing an atom for constituting the oxide superconductor;
• (a2) by removing a solvent by spraying the solution in a first atmosphere, producing a powder containing the atom for constituting the oxide superconductor;
• and
• (a3) cooling the powder in a second atmosphere into which a cooling gas is introduced;
• the concentration of carbon dioxide in the second atmosphere being lower than that in the first atmosphere, which contains the removed solvent component;
• the concentration of nitrogen oxide in the second atmosphere being lower than that in the first atmosphere, which contains the removed solvent component;
• the concentration of water vapor in the second atmosphere being lower than that in the first atmosphere, which contains the removed solvent component;
• and
• (b) producing an oxide superconducting wire by using the material of the oxide superconductor.