Electrical conductivity measurements for immiscible In-Se-Te alloys

The electrical conductivity of liquid In-0.80(SexTe1-x)(0.20) alloys has be en measured by a contact method in the temperature range from the monotecti c temperatures up to about 1200 K under pressures of argon gas (up to 50 MP a). It was revealed that the ternary In-0.80(SexTe1-x)(0.20) system may be considered as a set of quasibinary In-(Se/Te) alloys of almost critical con centrations. It was found that variation of Se-Te ratio at a constant conte nt of In changes the properties of coexisting liquids and affects the phase separation temperature T-c which decreases in a nonlinear manner from 949 K for In0.80Se0.20 to 817 K for In0.80Te0.20. A brief comparison analysis o f our results with available data for binary and ternary immiscible alloys has been performed. (C) 1999 Published by Elsevier Science S.A. All rights reserved.