| 摘要 |
PURPOSE:To provide a stabilized oxide superconductive coil material having high operation current by taking into account the magnetic field intruding a wound wire part so as to raise the magnetic boundary current of entire coil at higher practical temperature than that of liquid helium. CONSTITUTION:A wound wire is furnished by combining several kinds of wire materials with different shapes. Further, its superconductive part is composed of a joint body or a continuous body which is made of several kinds of oxide superconductive wire materials with a tape-like shape or without shape anisotropy. On the other hand, the superconductive wire material without shape anisotropy is mainly used at the part where the angle made between the self magnetic boundary of the coil intruding the coil inside and the center axis of the coil is more than 50 deg. and less than 130 deg., and furthermore the oxide superconductive wire material sheathed with metal is also used therein. |
