Significant role of nanoscale Bi-rich phase in optimizing thermoelectric performance of Mg<sub>3</sub>Sb<sub>2</sub>

Significant role of nanoscale Bi-rich phase in optimizing thermoelectric performance of Mg₃Sb₂

Wang Yang¹, Zhang Xin^{1, †}, Liu Yan-Qin¹, Zhang Jiu-Xing², Yue Ming¹

SEM and TEM analyses of the Mg₃Sb_1.5Bi_0.5 sample:, displaying (a) SEM image for typical fracture morphology, (b) low-magnification TEM image, (c) corresponding HADDF-STEM image, (d) EDS spectrum with the elemental composition analysis of the matrix, and (e) EDS spectrum with the elemental composition analysis of the white region.