| 摘要 |
PURPOSE:To manufacture the titled material capable of raising up to 230-300K Tc onset by calcining a mixture of groups IIIa and IIa elements in the periodic table and copper, and, after mixing a group IVb element in the periodic table with the calcined product, further calcining this mixed body at the respectively specified conditions. CONSTITUTION:The manufacture of the oxide superconducting material consisting of compounds containing one or more groups IIIa and IIa elements in the periodic table of the elements and copper, and having superconducting characteristics, is performed as mentioned below. That is, these starting materials are firstly mixed, and pressurized to form an integrated material, and then subjected to a first calcination under an oxidizing atmosphere at 500-1,100 deg.C. This calcined body is pulverized and mixed with the group IVb element or its compds., and then subjected to a second calcination at 500-1,100 deg.C. The oxide superconducting material obtained thus is generally shown by the formula. In the formula, x=0-1.0, y=2.0-4.0, z=1.0-4.0, w=4.0-10.0, v=0.01-3.0, A denotes the group IIIa element in the periodic table of the elements, B denotes the groups IIa element in the periodic table of the elements, and X denotes the group IVb element in the periodic table of the elements. |
