Effect of the physical aging on the secondary β relaxation process in a La-based metallic glass Xiyang Ma, Jingqi Zhang, Guojian Lyu and Jichao Qiao Eur. Phys. J. Appl. Phys., 98 (2023) 33 Published online: 08 May 2023 DOI: 10.1051/epjap/2023230031