| 摘要 |
PURPOSE:To obtain the superconductor consisting of a polycrystalline substance having a high Tc and a good orientational property by heating the raw powder for a YBaCuO-based oxide superconductor to high temp., then cooling, crushing, sufficiently agitating and mixing the powder, packing the mixture into a flexible tube and applying isobaric treatment and superconducting phase growth treatment. CONSTITUTION:The raw powder for forming an REBaCUO-based oxide superconductor (RE is rare-earth elements including Y) or the material formed by the conventional sintering method is heated to high temp. The material is then cooled and crushed, and the crushed material is sufficiently agitated and mixed until the RE2O3 phase or RE2BaCuO3 phase is finely and uniformly dispersed in a liq. phase. The mixed and crushed material is packed into a flexible tube 20 (e.g. rubber tube), and both ends are fixed to a disk 12 to exert a tension in the longitudinal direction. The material is then packed in the hydraulic cylinder 31 of a CIP device, and isobaric treatment is applied. The obtained superconducting raw rod 24 is brought out, a superconducting phase is grown by the unidirectional solidification method, etc., and the oxide superconductor is obtained. |
