Figure 1: Heating of Au70Cu5.5Ag7.5Si17.
(a) FDSC heat flow curves normalized to the heating rate. At low rates, a glass transition (Tg), exothermic phase transition peaks (T1 and T2) and endothermic melting (Tm) can be seen. The phase transition temperatures T1 and T2 shift to higher temperatures with increasing heating rate, and at sufficiently high rates an unexpected endothermic peak (at Te) arises after T1 and just before T2. (b) Close-up of the start of the endothermic effect and the second exothermic peak (T2). The onset of the endothermic effect shows no rate dependence, which indicates melting, whereas the T2 peak shifts to higher temperatures with increasing rates and changes its shape and size if located above Te.
