Fig. 3: Synthesis and microstructural characterization of Bi0.88Sb0.12 polycrystals.

a Schematic diagram illustrating the ultra-fast quenching process, the corresponding Bi-Sb binary phase diagram, and a photo image of the quenched sample. b EBSD image of the as-quenched sample. c EBSD image of the sample after annealing at 530 K for 7 days. d Elemental concentration profiles of Bi and Sb from EDS analysis along the white lines in (e) the as-quenched sample and (f) the annealed sample, respectively.