Is there a critical end point associated with the polyamorphism in Ce based metallic glasses?

Similar to the first-order iso-structural phase transition in elemental Ce (the gamma-alpha transition), the recently discovered polyamorphic transformations in Ce-based bulk metallic glasses are also attributed to 4f electron delocalization and the subsequent Kondo volume collapse. Despite of several experimental investigations in the past, the fundamental question of whether a critical end point exists in relation to glass polyamorphism in Ce-based metallic glasses remains unanswered. Here, we propose to address this issue by conducting X-ray Absorption Spectroscopy (XAS) on a representative Ce75Al25 glass under high pressure (up to 10 GPa) and low temperature (down to 20 K).