| 摘要 |
PURPOSE:To obtain a superconductive material of a high accuracy by decomposing a specific raw material for the superconductive material into minute particles of an atomic state, depositing them on a substrate and irradiating hydrogen ions. CONSTITUTION:Hydrogen ions are irradiated to a complex compond film of an oxide containing an element A, an element B and Cu constituted with the mol ratio of the elements of 0.5<=(A+B)/Cu<=2.5. Here, A denotes at least one element of Sc, Y and an element of lanthanum family (atomic numbers 57-71), and B at least one element from the IIa group. Since the raw material of the superconductive material is deposited on the substrate after being decomposed into tiny particles of the atomic state, the composition of the superconductive material formed becomes uniform. Furthermore, hydrogen ion treatment has a good controllability, enabling the treatment within a short period of time, and compensates crystal defect to obtain a desired crystal structure. This makes it possible to obtain the superconductive material of a high accuracy.
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