Deformability of Mg–aluminosilicate glass under high pressure and shear stress: dynamic coordination change of Al 3+

Key Points

• To investigate how aluminum coordination affects the deformability of Mg-aluminosilicate glass under high pressure and shear stress.
• Analyzed the deformability of Mg-aluminosilicate glass during high pressure application.
• Examined the effects of shear stress on aluminum coordination changes.
• Studied the relationship between coordination changes and plastic flow.
• Observed a significant change in aluminum coordination under high pressure.
• Confirmed that this coordination change activates shear-induced plastic flow in the glass.
• Identified the mechanism linking coordination dynamics to deformability.