| 摘要 |
PROBLEM TO BE SOLVED: To obtain an oxide superconductor having high critical current density. SOLUTION: Calcined powder prepd. by blending components so as to attain the objective compsn. is compacted and sintered to obtain the objective oxide superconductor. The carbon and water contents of the calcined powder having been regulated to <=1.0wt.%, preferably <=0.1wt.% and <=3.0wt.%, preferably <=0.5wt.%, respectively. The oxide superconductor is preferably a Bi-contg. oxide superconductor and preferably has >=3,000A/cm<2> critical current density. |
