2007/05/08 by D. Novita, Deassy I. Novita, P. Boolchand +2 · 1 citation
Materials Science · Physics and Astronomy · #Glass properties and applications #Material Dynamics and Properties #Phase-change materials and chalcogenides #cond-mat.soft
paper · pdf · doi:10.1103/physrevlett.98.195501
Accepted by PRL
openalex publication_date 2007/05/08 · arxiv created 2007/09/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We observe two thresholds in the variations of electrical conductivity of dry (AgI)x(AgPO3)1-x solid electrolyte glasses, when the AgI additive concentration x increases to 9.5% and to 37.8%. Raman scattering complemented by calorimetric measurements confirms that these thresholds are signatures of the rigidity phase transitions at x=9.5% from a stressed rigid to an isostatically (stress-free) rigid phase, and at x=37.8% from isostatically rigid to a flexible phase. In the flexible phase, the electrical conductivity seems to increase as a power of x. This is in good agreement with the theoretical prediction based on 3D percolation.