Linking the pressure dependence of the structure and thermal stability to α- and β-relaxations in metallic glasses.

ABSTRACT: Glasses derive their functional properties from complex relaxation dynamics that remain enigmatic under extreme conditions. Although the temperature dependence of these relaxation processes is well established, their behavior under high-pressure conditions remains poorly understood due to substantial experimental difficulties. In this study, we use cutting-edge experimental techniques to probe the pressure evolution of the relaxation spectrum in a Zr_46.8Ti_8.2Cu_7.5Ni₁₀Be_27.5 metallic glass across gigapascal pressure ranges. Our findings reveal two distinct relaxation mechanisms under high pressure: In the β-relaxation regime, compression drives the system with reduced atomic mobility and enhanced structural disorder, without appreciable

SUBMITTER: Shen J 

PROVIDER: S-EPMC12494008 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature