| 摘要 |
The present invention provides an oxide superconducting bulk magnet able to generate a strong magnetic field without fracturing at the time of magnetization in a 5T or more high magnetic field even if a diameter 50 mm or more large size. The oxide superconducting bulk magnet is an oxide superconducting bulk magnet comprised of a REBa 2 Cu 3 O 7-x phase in which RE 2 BaCuO 5 phases are dispersed, structured having a center core part with a reinforcing material provided at its outer periphery part and having, centered at the center core part, one or more ring-shaped oxide superconducting bulk magnets with reinforcing materials provided at their outer periphery parts and arranged in a nested manner, where,
RE: a rare earth element or combination of the same;
x: amount of oxygen deficiency, 0<x0‰¤0.2 |
