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

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

From: Bulk Bi-Sb polycrystals underpinned by high electron/phonon mean free path ratio enabling thermoelectric cooling under 77 K

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.

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