Abstract
Systematic investigations on the pre-crystallization process in the amorphous ionic conductor 0.60AgI0.25Ag 2O0.15P 2O 5 have been carried out by means of ultrasonic measurements, thermal analysis, electron microscopy (SEM and TEM) and ionic conductivity experiments. The temperature dependence of the longitudinal ultrasound attenuation and velocity showed anomalous attenuation peaks and sudden unusual relative sound velocity changes near 330 and 341 K, indicating that possible structural changes and softening of interatomic bonds occurred. These are consistent with the anomalous changes of ionic conductivity of the same samples. Thermal analysis revealed that such anomalous changes are directly related to the glass transition and the microcrystalline formation, respectively. Moreover, direct evidence for the processes of crystallizations above 344 K were given from our SEM and TEM study. Therefore, it is suggested that the observed anomalous enhancements near 326 and 344 K of ionic conductivity of this amorphous fast ionic conductor is related to the destruction of the amorphous structure and the crystallization of the amorphous state.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
