FIC glasses based upon AgI-TlI eutectic

B. TANGUY; J. PORTIER; S. ROSSIGNOL; J. M. REAU; J. J. VIDEAU

doi:doi:10.1051/jp4:1992220

Numéro		J. Phys. IV France Volume 02, Numéro C2, Octobre 1992 European Workshop on Glasses and Gels


Page(s)		C2-153 - C2-158
DOI		https://doi.org/10.1051/jp4:1992220

European Workshop on Glasses and Gels

J. Phys. IV France 02 (1992) C2-153-C2-158
DOI: 10.1051/jp4:1992220

FIC glasses based upon AgI-TlI eutectic

B. TANGUY, J. PORTIER, S. ROSSIGNOL, J. M. REAU and J. J. VIDEAU

Laboratoire de Chimie du Solide du CNRS, Université de Bordeaux I, 351 Cours de la Libération, 33405 Talence Cedex, France

Abstract
New vitreous conductors, shown in the TeO₂-Tl₂O-AgI system, are described. The ionic conductivity in these glasses increases with the AgI content. Structure consists of a covalent TeO₂-Tl₂O network and a AgI sublattice with only a weak interaction between them. The AgI-TlI system offers a deep eutectic for the (AgI)_0.75(TlI)_0.25 composition with a melting point at 220°C. This favourable medium has been selected to prepare new silver FIC glasses. So, glasses belonging to the pseudo quaternary TeO₂-Tl₂O-AgI-TlI system have been elaborated : the study of transport properties of [TeO₂-TlO_0.5]_1-x [(AgI)_0.75 (TlI)_0.25]_x glasses has shown a very high ionic conductivity for [MATH]. The influence of the Tl⁺ ions presence on the Ag⁺ ions mobility is discussed.