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Evaluation of thermochemical data and phase diagram data for superconductors

The purpose of the SUPERDATA project is:
to provide information on the optimum thermochemical conditions for preparation of known (yttrium barium copper based) superconducting phases;
to define stability ranges of these phases as a function of process parameters;
to provide a basis for phase equilibrium calculations in other potential superconducting oxide systems.

For this purpose experimental thermochemical methods as well as data assessments and ab initio calculations are employed.

The expected results are:
critically assessed and consistent thermochemical data for all relevant phases, ie Gibbs energy data as a function of composition and temperature;
a comprehensive specialised literature database for thermochemistry and phase diagrams.

Achievements to date involve the development of a literaturebase and the first data assessment for metallic subsystem yttrium barium copper oxide and metal oxide subsystems.

Reported by

Rheinisch-Westfaelische Technische Hochschule Aachen
Kopernikusstrasse 16
52074 Aachen
Germany
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