“…Recently, a new type of MG-based composites, namely, metallic nanoglasses (NGs), have been successfully prepared [ 22 , 23 , 24 ], which consist of glassy grains separated by the glass–glass interfaces (GGIs). Based on the dual-phase model suggested for those NGs [ 25 , 26 , 27 , 28 , 29 ], the glassy grains are analogous to those rapidly-quenched MGs with nano-sized dimensions [ 30 , 31 ]. In contrast, the GGIs, which have been determined to possess unique atomic structures, could be with a new glass phase [ 32 , 33 , 34 , 35 , 36 , 37 , 38 ], i.e., the second phase in NGs.…”