High-Performance Mg3Sb2-xBix Thermoelectrics: Progress and Perspective
(a) The experimental of Mg3X2 and their alloys, where SC and PC denote single-crystalline and polycrystalline samples, respectively. The data are taken from Refs. [33, 96, 135, 142]. (b) Phonon dispersion and partial density of states (PDOS) of Mg3Sb2. (c) Mode Grüneisen parameter of Mg3Sb2. (d) The diagram of atomic displacement corresponding to the transverse at the A point (large positive ) and at the L point (large negative ). Panel (b) is reproduced with permission from Ref. . CC-BY-4.0. Panels (c, d) are reproduced with permission from Ref. . Copyright 2018 Elsevier Ltd.
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