| 摘要 |
PURPOSE:To completely protect a container against an external magnetic field by holding laminated superconducting material at a critical temperature or lower. CONSTITUTION:Mixture of oxide, carbonate, sulfide, fluoride, nitride or carbide containing predetermined superconducting material, such as group I, II, III elements and oxygen, nitrogen, fluorine, carbon, sulfur, etc. is mixed at a suitable ratio. The mixture is sintered or crystallized at a temperature directly under a melting point to form a molding or powder, which is covered on the inner or outer surface of a magnetic shielding case. When this is held at critical temperature or lower, the interior of the case is shielded from an external magnetic field to completely protect a content. |
