Possible origin of $\beta$-relaxation in amorphous metal alloys from atomic-mass differences of the constituents

Bingyu Cui, Zach Evenson, Beibei Fan +3

We employ an atomic-scale theory within the framework of nonaffine lattice dynamics to uncover the origin of the Johari-Goldstein (JG) $\beta$-relaxation in metallic glasses (MGs). Com…