| 摘要 |
<p>The present invention provides a superconducting magnet device for a crystal pulling device comprising a pair of ring-like superconducting coils (2a, 2b) facing with each other, with the crystal pulling device disposed therebetween, a radiation shield (42) surrounding the superconducting coils (2a, 2b), and a vessel (51) surrounding the radiation shield (42), wherein the vessel (51) on the side (55) facing to the crystal pulling device is made from a nonmagnetic substance (55), and the vessel (51) on the other side (52, 53, 56, 57, 58) is made from a magnetic substance. <IMAGE></p> |
