PHASE EQUILIBRIA IN THE Cu8GeSe6–Ag8GeSe6 SYSTEM

Phase equilibria in the Cu8GeSe6–Ag8GeSe6 system were studied by means of differential thermal analysis and powder X-ray diffraction technique as well as electromotive force measurements of concentration chains with the solid electrolyte. The T–x phase diagram and corresponding composition–property diagrams were constructed. It was established that the system is characterized by continuous series of solid solutions between high-temperature modifications of starting compounds. Formation of solid solutions decreases the temperature of polymorphic transitions of both compounds