The thermoelectric characteristics of commercial polycrystalline Mg2Si doped with Bi, Al + Bi, Ag, and Cu were examined. The samples for the thermoelectric measurements were prepared using the plasma-activated sintering (PAS) technique. The measured values of the Seebeck coefficient were compared with values calculated using the all-electron band-structure calculation package (ABCAP) based on a full-potential augmented-plane-wave (FLAPW) band-structure calculation in a local density approximation (LDA). For the Bi + Al-co-doped samples, the observed values of the dimensionless figure of merit, ZT, were higher than those of solely Bi-doped samples. The maximum value obtained for Bi + Al-doped Mg2Si was 0.77 at 862 K. For the Ag-doped samples, ZT was significantly lower than that of the Bi + Al-doped samples, with the maximum value being about 0.11 at 873 K.
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References
J. Tani and H. Kido, Physica B 223, 364 (2005).
M.W. Heller and G.C. Danielson, J. Phys. Chem. Solids 23, 601 (1962).
M. Akasaka, T. Iida, A. Matsumoto, K. Yamanaka, Y. Takanashi, T. Imai, and N. Hamada, J. Appl. Phys. 104, 13703 (2008).
N. Hamada, T. Imai, and H. Funashima, J. Phys. Condens. Matter. 19, 365221 (2007).
M. Fukano, T. Iida, K. Makino, M. Akasaka, Y. Oguni, and Y. Takanashi, MRS Symp. Proceedings, vol. 1044 (2008), pp. 247–252.
S.H. Vosco, L. Wilk, and M. Nusair, Can. J. Phys. 58, 1200 (1980).
G.S. Painter, Phys. Rev. B 24, 4264 (1981).
A. Kato, T. Yagi, and N. Fukusako, J. Phys. Condens. Matter. 21, 205801 (2009).
C. Kittel, Introduction to Solid State Physics, 8th ed. (NJ: Wiley, 2005), pp. 156–157.
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This work was partly supported by Grant-in-Aids for Scientific Research in B by the Japanese Ministry of Education, Science, Sports, and Culture.
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Sakamoto, T., Iida, T., Matsumoto, A. et al. Thermoelectric Characteristics of a Commercialized Mg2Si Source Doped with Al, Bi, Ag, and Cu. J. Electron. Mater. 39, 1708–1713 (2010). https://doi.org/10.1007/s11664-010-1155-y
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DOI: https://doi.org/10.1007/s11664-010-1155-y