fig2
Figure 2. (A) X-ray diffraction (XRD) patterns of Bi0.5Sb1.5Te3 powders synthesized under varying ball milling durations, with and without post-synthesis annealing, illustrating the influence of mechanical processing and thermal treatment on phase composition. (B) XRD patterns of polycrystalline Bi0.5Sb1.5Te3 bulks obtained from melt-spun ribbons, highlighting the structural differences between samples processed with and without the melt-spinning technique.
