1998-11-04
16:15 at LFW B 1

Thermodynamic Description of the Interactions between the Bi-Sr-Ca-Cu-O Systems and Ag

Jerome Assal

Nichtmetallische Werkstoffe, ETH Z|rich

The Bi-Sr-Ca-Cu-O system contains several superconducting phases, the 11905 compound with Tc = 30 K, the 2212 compound with Tc = 95 K, and the 2223 compound with Tc = 110 K. For practical applications not only a high critical temperature i omplete description of the thermodynamics in the Ag-Bi-Sr-Ca-Cu-O system is therefore desirable. The CALPHAD method allows to build databases for such complex systems, where the Gibbs energy of each phase is modeled. The phases of the lowest order s