| 摘要 |
PURPOSE:To produce a superconductor exhibiting superconductivity at above the b.p. of liquid N2 by calcining a molded body obtained by the compression molding of a powder mixture consisting of Y oxide, Ba carbonate, and Cu oxide in nonoxidizing atmosphere. CONSTITUTION:A powder mixture obtd. by mixing powdery Y oxide (e.g. Y2O3), powdery Ba carbonate (e.g. BaCO3), and powdery Cu oxide (e.g. CuO) by the wet process is admixed with a binder, and a molded product is obtained by compression molding the mixture. The molded body is then calcined at 950-1,200 deg.C in oxidizing atmosphere to prepare a Y-Ba-Cu-O type superconductor consisting of 10<=Y<=60atom.%, 20<=Ba<=50atom.%, and 30<=Cu<=65atom.%. |
