Neutron scattering from the superionic glasses, (AgI) sub(x)(AgPO sub(3)) sub(1-x), through the glass transition

• Published in: Solid state ionics Vol. 138; no. 1-2; pp. 115 - 121
• Main Authors: Kartini, E, Collins, M F, Indayaningsih, N, Svensson, E C
• Format: Journal Article
• Language: English
• Published: 01.12.2000
• ISSN: 0167-2738

We have performed neutron scattering measurements to study the temperature dependence of the scattering from the superionic glasses (AgI) sub(x)(AgPO sub(3)) sub(1-x) with x identical with 0.0, 0.3, 0.5 and 0.7 between room temperature and a temperature well above the calorimetric glass transition temperature, T sub(g). The temperature dependence of the positions of the glass/liquid diffraction peaks is featureless except in the pure AgPO sub(3) glass where we observe a change in the temperature derivative of the positions of the first and third peaks at T sub(g). We compare our results with the macroscopic thermal expansion. The peak intensities show an anomalous decrease on heating that occurs at a temperature about 5-15% higher than T sub(g).