To provide a hardly occurs superconducting coil deterioration due to damage such as peeling of the layer in the oxide superconducting wire.
A superconducting coil superconducting wire 10 is laminated in the thickness direction. Superconducting wire 10 has a superconducting laminate 15 superconducting layer is formed via an intermediate layer base material tape, and a stabilizing layer 16 covering at least the side surface 15b of the superconducting laminate 15. Residual stress F2 inside the side surface portion 16B that covers the side surface 15b of the superconducting laminate 15 of the stabilizing layer 16 is a tensile stress along the thickness direction of the superconducting laminate 15. Residual stress F2 is greater than the maximum applied stress in the radial direction of the superconducting coil.
.The