Influence of pressure-induced structural change in Al 2 O 3 –SiO 2 glasses on the sound velocity and Poisson's ratio under pressure

Key Points

• This research examines how pressure affects the structural changes and elastic properties of Al2O3-SiO2 glasses.
• Studied x Al2O3–(100−x)SiO2 glasses with varying compositions (x = 29, 36, 43, 50, 60 mol.%)
• Utilized in situ high-pressure techniques to observe changes in properties under applied pressure.
• Found that structural changes influence both sound velocity and Poisson's ratio in the glasses
• Demonstrated a correlation between composition and elastic properties under pressure.