Abstract
Mg2Sn-based solid solutions Mg2Ge0.25Sn0.75−xSbx (x = 0, 0.03, 0.05, 0.07, 0.10, 0.15) were synthesized by high-frequency melting in a graphite crucible, followed by spark plasma sintering. The effects of Sb substitution on the phase constitution and thermoelectric properties of the solution were investigated. All the samples were face-centered cubic Mg2Ge0.25Sn0.75 solutions without any additional phase arising from Sb in the compounds. The electrical resistivity decreased significantly from 202 μΩ m to 3.66 μΩ m at 300 K as lower Sb content x increased from 0 to 0.03, but increased slightly from 3.66 μΩ m to 11.6 μΩ m at 300 K as Sb content x further increased from 0.03 to 0.15. The Seebeck coefficient showed a similar pattern of change. The thermal conductivity of the solid solution clearly decreased from 3.6 W m−1 K−1 to 1.4 W m−1 K−1 at 300 K as Sb content x increased from 0 to 0.15. The highest power factor of 4010 μW m−1 K−2 was obtained in the sample of Mg2Ge0.25Sn0.72Sb0.03 at 573 K. The lowest thermal conductivity of 1.17 W m−1 K−1 was found in Mg2Ge0.25Sn0.65Sb0.1 at 473 K. The maximum ZT of 1.54 was obtained in Mg2Ge0.25Sn0.68Sb0.07 at 623 K. Compared with the value 0.03 for its parent alloy at the same temperature, this is a dramatic improvement.
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References
J. He, Y. Liu, and R. Funahashi, J. Mater. Res. 26, 1762 (2011).
S.R. Sankar, D.P. Wong, C.S. Chi, W.L. Chien, J.S. Hwang, F.C. Chou, L.C. Chen, and K.H. Chen, CrystEngComm 17, 3440 (2015).
T.C. Harman, P.J. Taylor, M.P. Walsh, and B.E. LaForge, Science 297, 2229 (2002).
B. Poudel, Q. Hao, Y. Ma, Y. Lan, A. Minnich, B. Yu, X. Yan, D. Wang, A. Muto, D. Vashaee, X. Chen, J. Liu, M.S. Dresselhaus, G. Chen, and Z. Ren, Science 320, 634 (2008).
W.T. Liu, X.F. Tang, H. Li, J. Sharp, X.Y. Zhou, and C. Uher, Chem. Mat. 23, 5256 (2011).
S.W. You and I.H. Kim, J. Korean Phys. Soc. 64, 690 (2014).
S. Nakamura, Y. Mori, and K.I. Takarabe, J. Electron. Mater. 43, 2174 (2014).
K. Kambe and H. Udono, J. Electron. Mater. 43, 2212 (2014).
X.K. Hu, D. Mayson, and M.R. Barnett, J. Alloys Compd. 589, 485 (2014).
H. Gao, T. Zhu, X. Zhao, and Y. Deng, Dalton Trans. 43, 14072 (2014).
J. de Boor, C. Compere, T. Dasgupta, C. Stiewe, H. Kolb, A. Schmitz, and E. Mueller, J. Mater. Sci. 49, 3196 (2014).
S.W. You, D.K. Shin, and I.H. Kim, J. Korean Phys. Soc. 64, 1346 (2014).
M. Akasaka, T. Iida, A. Matsumoto, K. Yamanaka, Y. Takanashi, T. Imai, and N. Hamada, J. Appl. Phys. 104, 013703 (2008).
H.L. Gao, X.X. Liu, T.J. Zhu, S.H. Yang, and X.B. Zhao, J. Electron. Mater. 40, 830 (2011).
M.A.B. Bashir, S.M. Said, M.F.M. Sabri, D.A. Shnawah, and M.H. Elsheikh, Renew. Sust. Energy Rev. 37, 569 (2014).
W. Liu, X.J. Tan, K. Yin, H.J. Liu, X.F. Tang, J. Shi, Q.J. Zhang, and C. Uher, Phys. Rev. Lett. 108, 166601 (2012).
X. Zhang, H.L. Liu, S.H. Li, F.P. Zhang, Q.M. Lu, and J.X. Zhang, Mater. Lett. 123, 31 (2014).
X.K. Hu, M.R. Barnett, and A. Yamamoto, J. Alloys Compd. 649, 1060 (2015).
S.W. You, D.K. Shin, and I.H. Kim, J. Korean Phys. Soc. 65, 691 (2014).
P. Villars, A. Prince, and H. Okamoto, Handbook of Ternary Alloy Phase Diagrams (New York: ASM International, 1995), pp. 236–237.
W.S. Liu, H.S. Kim, S. Chen, Q. Jie, B. Lv, M. Yao, Z. Ren, C.P. Opeil, S. Wilson, C.W. Chu, and Z. Ren, Proc. Natl. Acad. Sci. U.S.A. 112, 3269 (2015).
S.J. Su, B.W. Cheng, C.L. Xue, D.L. Zhang, G.Z. Zhang, and Q.M. Wang, Acta Phys. Sin. 61, 176104 (2012).
S.M. Choi, T.H. An, W.S. Seo, C. Park, I.H. Kim, and S.U. Kim, J. Electron. Mater. 41, 1071 (2012).
H.L. Gao, T.J. Zhu, X.B. Zhao, and Y. Deng, Intermetallics 56, 33 (2015).
S. Sharma and S.K. Pandey, Comp. Mater. Sci. 85, 340 (2014).
C.M. Bhandari and D.M. Rowe, Thermal Conduction in Semiconductors (New York: Wiley, 1988), pp. 115–119.
J.Q. Li, X.X. Li, F.S. Liu, W.Q. Ao, and H.T. Li, J. Electron. Mater. 42, 366 (2013).
S.W. You, D.K. Shin, S.C. Ur, and I.H. Kim, J. Electron. Mater. 44, 1504 (2015).
G.S. Polymeris, N. Vlachos, A.U. Khan, E. Hatzikraniotis, C.B. Lioutas, A. Delimitis, E. Pavlidou, K.M. Paraskevopoulos, and T. Kyratsi, Acta Mater. 83, 285 (2015).
Acknowledgments
The work was supported by the National Natural Science Foundation of China (Nos: 51101103, 51171117 and 51571144), and Shenzhen Science and Technology Research Grant (Nos. JCYJ20150827155136104, JCYJ20150324141711684 and JCYJ20150069). The authors would like to thank Mr. Haizhao Yu and Jun Pei for their help with the experiment.
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Ao, W., Peng, M., Liu, F. et al. High Thermoelectric Properties in Mg2Ge0.25Sn0.75−xSbx Solid Solution. J. Electron. Mater. 48, 5959–5966 (2019). https://doi.org/10.1007/s11664-019-07315-2
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DOI: https://doi.org/10.1007/s11664-019-07315-2