Temperature cycling rejuvenation effect in La-Ni-Al metallic glass by anomalous x-ray scattering

In this proposal, we would like to carry out anomalous x-ray scattering (AXS) experiments on La-Ni-Al metallic glasses (MG) to obtain the relationship between the rejuvenation effect by a temperature cycling and the changes in the local atomic structures. Our recent AXS experiments reveal that small but distinct structural changes were observed by the rejuvenation effect with a temperature cycling even in the first neighboring peaks in a Gd65Co35 MG. Concerning the present MG samples, Ketov et al. [1] predicted the presence of such an effect in the context of structural and elastic heterogeneities by the cryogenic rejuvenation. We expect to clarify that the structural changes occur universally in MGs by the rejuvenation effect, although depending on the extent of structural and/or elastic heterogeneity in MGs.