The effect of composition on pressure-induced polyamorphism in metallic glasses

Polymaorphism was recently revealed in metallic glasses (MGs) under high-pressure. The electronic structural evolution of solvent component was confirmed to be essentially responsible for the polyamorphic transition in MGs. In this paper, structural evolutions of Ce68−xLaxAl10Cu20Co2 (x = 0, 34, and 68) MGs were investigated by in situ high pressure X-ray diffraction measurements. The effect of composition on pressure-induced polyamorphism in MGs was discussed. The results indicated that polyamorphous in Ce-based MGs is strongly related to the Ce concentration. These results provide new insight for searching for polyamorphous and glass structure in MGs.