Fig. 1: The plasticity of Mg3Sb2-xBix.
From: High performance magnesium-based plastic semiconductors for flexible thermoelectrics
a Compressive stress and strain curves of polycrystalline Mg3Sb2 and Mg3Bi2 with optical images inset showing Mg3Sb2 and Mg3Bi2 after 33.3% and 16.7% compression, respectively; b fracture surface morphology of compressed polycrystalline Mg3Bi2; c optical images of single-crystalline Mg3Bi2 by bending, twisting and cutting; d temperature dependence of zT and e compressive strain–stress curves of polycrystalline Te-doped Mg3Sb2-xBix, Bi2Te3-based compounds, Ag2(Te,Se,S) and SnSe23,7,8,18,19,20,21,27,37,58.
