| Mg2Si1-xSnx solid solutions have been regard as an excellent candidate for thermoelectric energy conversion of middle temperature, because of environment friendly and abundant elements. As is known, doping different element to Mg2Si1-xSnx solid solutions can improve the thermoelectric properties. There are many reports on the synthesis processing of Mg2Si1-xSnx (x=0,0.2,0.4,0.5,0.6,0.8, 1.0), and different element doped. But there are no reports about doping on Mg2Si0.3Sn0.7. The preparation of low dimensional or nano-structured materials is an effective way to improve thermoelectric properties. Because the low dimensional materials can regulate the transport of electron and phonon reasonably, enhance the thermoelectric performance.In this study, solid state reaction at low temperature combined with spark plasma sintering (SPS) were used to synthesize Mg2Si0.3Sn0.7 compound. The results showed that the single phase of Mg2Si0.3Sn0.7 compound has been obtained. Combined solid state reaction with SPS, different content of Sb and Bi doped Mg2Si0.3-xSn0.7Sbx(0≤x≤0.015) and Mg2Si0.3-xSn0.7Bix(0 |
