| 摘要 |
PURPOSE:To raise the critical temp. (Tc) and the temp. (Tcf) at which the electric resistance becomes completely zero, by embodying the condition in which oxides having crystal structure of pseudo-perovskite type, which bears superconduction, is produced. CONSTITUTION:Superconductive oxide molded and sintered after preliminary baking, crushing is inserted in a metal pipe, in which another metal pipe with thin wall thickness consisting of at least one of such metals as elements of Ag, Au, platinum and stainless steel is fitted, and the ends of the pipes are sealed followed by extrusion treatment, and thus a superconductive wire is obtained. The superconductive oxide to be inserted in the metal pipe shall preferably be pulverized nitride, oxide, hydroxide, carbonate, sulfate, or nitrate of group IIa elements, group IIIa elements, and either group Ib, IIb, IIIb, or VIIIa elements which is baked, crushed, molded, and sintered. This provides high Tc as well as high Tcf. |
