| abstract |
(57) [Abstract] [Purpose] To provide a method for reliably producing a larger single-crystal superconducting bulk material with high efficiency. [Constitution] RE 2 BaCuO 5 phase dispersed REBa 2 In producing a Cu 3 O 7-x phase crystal, a seed crystal was R It is placed under a precursor which is a compact containing oxide powder of E, Ba and Cu, and crystals are grown from the precursor. [Effect] Since a large seed crystal is brought into contact with the precursor, it becomes difficult to polycrystallize, and the supporting material (layer in which RE is replaced), which is required in the conventional manufacturing method, is not required, and the manufacturing operation is simplified. Become. |