| 摘要 |
PURPOSE:To obtain an oxide superconductor composition capable of easily obtaining a superconductor having a high content of a high-temp. phase by mixing Bi, Pb, Sr, Ca, Cu, Mg and Ba in a specified ratio, then calcining and crushing the mixture. CONSTITUTION:The raw materials each consisting essentially of bismuth, lead, strontium, calcium, copper, magnesium and barium in an atomic ratio of (1.2 to 22):(0.2 to 1):(1.4 to 2.2):(1.6 to 2.4):(2.8 to 4):A:B (where A<=1 and B<=0.6) are weighed. The raw materials are mixed, calcined and crushed to obtain the desired oxide superconductor raw material. The raw material is sintered to obtain an oxide superconductor. |
