ChemInform Abstract: Phase Diagram Studies in the System Tl₂O₃—BaO—CaO—CuO—Ag.

Abstract

Phase Diagram Studies in the System Tl 2 O 3 -BaO-CaO-CuO-Ag. -The title system is studied with emphasis on the high temp. superconducting phases. Due to the existence of the TlBa 2 Ca 2 Cu 3 O 8.5 + Tl 2 Ba 2 Ca 2 Cu 3 O 10 + Tl 2 Ba 2 CaCu 2 O 8 three-phase region, it is possible to prepare multiphase samples consisting of three high-temperature superconducting phases where each of them exhibits a critical temperature of ≥100