High and low temperature syntheses of AgI–AgPO3 glasses: Structural and thermal studies

• High and low temperature syntheses lead to formation of amorphous products.
• Thermal analysis and Raman spectroscopy evidence dissimilarities between materials.
• Ball-milling of glasses leads to lowering of the glass connectivity.
• AgI distributes non-uniformly in the mechanosynthesized materials.

In this work we studied the AgI–AgPO3 and AgPO3 glasses obtained in high and low temperature syntheses. The mechanosynthesis and melt-quenching methods were employed to prepare the amorphous materials. Samples were investigated by means of X-ray diffraction, modulated differential scanning calorimetry and Raman spectroscopy. Despite the identical overall chemical composition of the glasses, we noticed different values of glass transition, non-reversing enthalpy and unequal phase composition in elevated temperatures. The work discusses differences in the glass network and distribution of its components induced by different energy transfer mechanisms of each synthesis method.