| 摘要 |
PURPOSE:To utilize perfect diamagnetism and to shield leakage magnetism, by using a laminated composite body of a superconductive ceramic molded body and ferromagnetic material. CONSTITUTION:A magnetic shielding material 1 comprises a laminated composite body of a superconductive ceramic molded body 2 and a ferromagnetic material 3. As the superconductive ceramic molded body, a molded body such as a tile which is directly molded by baking when superconductive ceramic material is manufactured is used. In addition, a molded body wherein the powder of the superconductive ceramic molded body obtained in this way is bonded with organic binder can be used. As the ferromagnetic material, arbitrary materials such as magnetic metals and oxides of iron, iron alloy, ferrite and the like can be used. Especially, amorphous magnetic alloy is desirable since it is light. As the ferromagnetic material which is laminated on the superconductive ceramics, a sheet shaped material is desirable. Since the amorphous magnetic alloy is obtained as a tape shape, it is desirable to mold the alloy in the sheet shape by weaving and knitting the tape. |
