OXIDE SUPERCONDUCTOR AND PRODUCTION THEREOF

摘要

An oxide superconductor comprising Ln<6>BaCuO psi and PtBaCuO with a mean particle diameter of 0.1 to 10 <0>m finely dispersed in the crystal of LnBa<6>Cu<7>Oy, wherein Ln represents at least one rare earth element including Y; and a process for producing the same by melting a powdery raw material comprising composite oxides of Ln, Ba and Cu, rapidly cooling the melt to effect solidification, crushing the solid, adding thereto a Pt powder, molding the mixture, heating the molding into a semi-molten state, and cooling the resulting molding.