PRODUCTION OF SUPERCONDUCTOR

摘要

PURPOSE:To obtain the subject superconductor having a high critical current density (Tc) and low in reduction of Tc by blending a rare earth element and/or yttrium with barium and copper in a prescribed ratio and calcining the resultant mixture in an oxygen-containing air current at a prescribed temperature. CONSTITUTION:A rare earth element (provided that praseodymium and neodymium are excluded) and/or yttrium is blended with barium and copper. The mixture ratio is adjusted to (1.08-1.35):(1.95-2.03):(3+ or -0.08) on atomic ratio base. The resultant mixture is then calcined in an oxygen-containing air current at 970-1300 deg.C.