Thermoelectric performance of quaternary Mg2Si0.27Ge0.05Sn0.65Sb0.03 solid solutions

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Thermoelectric performance of quaternary Mg2Si0.27Ge0.05Sn0.65Sb0.03 solid solutions
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Affiliation:School of Materials,Ningbo University of Technology,Materials Science and Engineering College,Taiyuan University of Technology,Materials Science and Engineering College,Taiyuan University of Technology,Materials Science and Engineering College,Taiyuan University of Technology,School of Materials,Ningbo University of Technology
Clc Number:TG113.22
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Abstract:

Single–phased Mg₂_(1+x)Si_0.27Ge_0.05Sn_0.65Sb_0.03 (x = 0.05, 0.08) quaternary solid solutions were prepared by B₂O₃ flux method followed by spark plasma sintering (SPS). The electrical conductivity, Seebeck coefficient and thermal conductivity were measured from 300 K to 800 K. The results show that the electrical conductivity increases while the Seebeck coefficient decreases with temperature for these samples. The lattice thermal conductivities of all the samples are higher than the calculated value using the Abele model. A maximum ZT of 1.0 at 800 K was obtained in the sample with x = 0.08.

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[Du Zhengliang, Song Zhiliang, Lu Yufu, He Tongtong, Cui Jiaolin. Thermoelectric performance of quaternary Mg₂Si_0.27Ge_0.05Sn_0.65Sb_0.03 solid solutions[J]. Rare Metal Materials and Engineering,2018,47(1):89~92.]
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Received:January 18,2016
Revised:March 15,2016
Adopted:May 18,2016
Online: February 07,2018
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