HIGH T_c SUPERCONDUCTOR YBa_2 Cu_3 O_x SYNTHESIZED BY UNIDIRECTIONAL REACTION

摘要

A unidirectional reaction for synthesis of the high T_c superconductor YBa₂Cu₃O_x has beenproposed, Its T_c is 90-94.5 K and △T is 1 K. The phase relationships in the systemY₂BaCuO₅-Y₂Cu₂O₅-CuO-YBa₂Cu₃O_x were studied and discussed.