| 摘要 |
PURPOSE:To obtain a setter having no bad effect such as contamination to an oxide superconductor, by providing a superconductor having same composition as oxide superconductor contained by a material to be calcined on the face putting a material to be calcined. CONSTITUTION:A setter obtained by providing an oxide superconductor having same composition as the above-mentioned superconductor on the face putting a material to be calcined containing the above-mentioned superconductor or a mixture capable of providing the above-mentioned superconductor by heating. The above-mentioned setter contaminates no oxide superconductor which is a material to be calcined in calcining, since the setter consists of oxide superconductor having same composition as the material. When the material becoming same composition as the material to be calcined through same calcination process as that of material to be calcined is used as the setter, the setter gives no strain to side of the material to be calcined because of having same heat shrinkage as the above-mentioned material in calcination and further make it possible to improve the characteristics of the calcined material. |
