Abstract
We report neutron-scattering measurements on the first sharp diffraction peak in the superionic conducting glass as a function of composition x from 0.0 to 0.7. The temperature variation is studied in detail between 300 K and 500 K, a range that spans the calorimetric glass transition. This peak reflects structure in the phosphate network with periodicity and correlation length The intensity of the first sharp diffraction peak shows an anomaly as a function of temperature at a temperature about 6–11 % higher than as measured calorimetrically. This is tentatively ascribed to the diffraction intensity reflecting the onset of relaxation, while the calorimetric data reflects the onset of relaxation.
- Received 23 March 1999
DOI:https://doi.org/10.1103/PhysRevB.61.1036
©2000 American Physical Society