Patent ID: 8716189

Claim:
A method of producing a superconductive material, comprising the steps of: providing a solution of an organic compound of metals whose oxides form a superconductive material; applying the solution onto a surface of a support body; irradiating a surface of the support body opposite to the surface on which the solution was applied with a laser light; conducting a provisional baking step to cause organic components of the organic compound to undergo thermal decomposition and form oxides of the metals; and conducting a main baking step to cause the oxides of the metals to transform into the superconductive material and produce an epitaxially-grown superconductive coating material, wherein the laser irradiation is conducted under the following conditions: 5 mJ/cm 2 ≦intensity of the laser light F≦ 200 mJ/cm 2 ; 1≦number of pulses P≦ 198,000,000; 0.03 J/cm 2 ×a substrate constant≦total energy≦89000 J/cm 2 ×a substrate constant, where a substrate constant is defined as a number not less than 1 and dependent on the nature and thickness of the support body; and an irradiation condition area is bounded by straight lines having the following equations log 10 P=K 1 F+K 2 log 10 P=K 1 F+K 3 , where K 1 is the slope of a line between a point F corresponding to an arbitrary point P where transformation into the superconductive material first occurs and a point P corresponding to an arbitrary point F where transformation into the superconductive material occurs first, K 2 is a logarithmic value at the point P in F=O where a value at the point P in F=5 where transformation into the superconductive material occurs first is outwardly inserted along the slope K 1 and K 3 is a logarithmic value at the point P in F=O where a value at the point P in F=5 where ablation first occurs is outwardly inserted along the slope K 1 , where K 3 >K 2 is established.