PURPOSE: To obtain easily a superconductor having superior superconducting characteristics by heat-treating a mixture of a specified oxidizing agent with a specified powdery oxide superconductor contg. alkaline earth elements, Cu, O, etc. or powdery starting materials of said oxide superconductor.
CONSTITUTION: The title process relates to a process for producing an oxide superconductor of A-B-Cu-O type (A is a IIIa group metal element of the periodic table such as La, Y, Ce, Yb, Sc, etc.; B is an alkaline earth element such as Ba, Sr, etc.) or A-B-Cu-O-X type (X is halogen such as F, Cl, etc.). After mixing at least one kind of oxidizing agent expressed by CXOy (y is 1W4; C is an alkali metal element such as Na, K, etc.) with the powder or raw material powder of said superconductor, the mixture is heat-treated. When, for example, a Y-Ba-Cu-O type superconductor is to be produced oxides or carbonates of constituting elements for the superconductor, such as Y2O3, BaCO3, CuO, etc. are used for the raw materials of the superconductor.
KONO TSUKASA
IKENO YOSHIMITSU
SADAKATA NOBUYUKI
AOKI SHINYA
SUGIMOTO MASARU
