| 摘要 |
PURPOSE: To secure the utilization of excessive oxygen to be required for superconductor in relation to the core material of a superconductor during the time of manufacturing and operation by including BaO2 or the mixture of BaO2 and BaO in the barium-oxygen compound. CONSTITUTION: A core material 4 is arranged inside of a metal coating 1 for functioning as a mechanical carrier and emergency current conductor, and a metal tube is filled with the powder material 3 such as rare earth metal oxide, barium-oxygen compound and copper oxide CuO or the existing superconductive powder, which are mixed at a stoichiometric ratio. In this case, the barium-oxygen compound includes BaO2 or the mixture of BaO2 and BaO, and the mixture ratio is adjusted so that the excessive oxygen in relation to the stoichiometric compound exists. With this structure, oxygen sufficient for manufacturing the optimal superconductive compound is stored in the core independently of the existence of oxygen, of which diffusion from the core is inevitable. |
