ANALYSIS OF ACOUSTIC ATTENUATION SPECTRA OF PHOSPHATE ION CONDUCTING GLASSES BEFORE AND AFTER DEHYDRATION

In this paper, acoustic attenuation measurements are used to detect structural changes due to chemical processes related to dehydration. This paper presents the initial acoustic measurements conducted at a frequency of 13 MHz on a glass sample with composition 40Li2 O-10BaO-50P2 O5 (mol %) and in dehydrated after thermal treatment at 800 ºC for increasing time lengths. The analysis revealed that the notable peak within the mid-temperature range was decreased after 1 and 3 hours of the dehydration process, and by the 6-hour, it was no longer present in the dehydrated sample.