| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain stable superconducting characteristics hardly influenced by magnetic fields even if used for a superconducting device in a bent state. <P>SOLUTION: A superconductive current lead 100 provides electric power from a power supply placed under a room temperature environment to a superconducting device placed inside an ultralow-temperature container. On front and back faces 152a, 152b of a lead body 152 whose both ends are joined respectively to a pair of electrodes 131, 133, multiple superconducting wire rods 160 are placed parallel to one another. The both ends of the superconducting wire rods 160 are joined respectively to the electrodes 131, 133. The superconducting wire rods 160 includes an oxide superconducting layer 163 made of ReBa<SB POS="POST">2</SB>Cu<SB POS="POST">3</SB>O<SB POS="POST">z</SB>-based superconducting materials. In the oxide superconducting layer 163, oxide particles smaller than 50 nm containing at least one of Y, Zr, Sn, Ti and Ce are dispersed as magnetic-flux pinning points. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
