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Solid-State Synthesis and Thermoelectric Properties of Sb-Doped Mg2Si Materials

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Abstract

Sb-doped magnesium silicide compounds have been prepared through ball milling and solid-state reaction. Materials produced were near-stoichiometric. The structural modifications have been studied with powder x-ray diffraction. Highly dense pellets of Mg2Si1−x Sb x (0 ≤ x ≤ 0.04) were fabricated via hot pressing and studied in terms of Seebeck coefficient, electrical and thermal conductivity, and free carrier concentration as a function of Sb concentration. Their thermoelectric performance in the high temperature range is presented, and the maximum value of the dimensionless figure of merit was found to be 0.46 at 810 K, for the Mg2Si0.915Sb0.015 member.

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Authors and Affiliations

  1. Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678, Nicosia, Cyprus

    M. Ioannou, A. U. Khan & Th. Kyratsi

  2. Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece

    G. Polymeris, E. Hatzikraniotis & K. M. Paraskevopoulos

Authors
  1. M. Ioannou
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  2. G. Polymeris
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  3. E. Hatzikraniotis
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  4. A. U. Khan
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  5. K. M. Paraskevopoulos
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  6. Th. Kyratsi
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Correspondence to Th. Kyratsi.

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Ioannou, M., Polymeris, G., Hatzikraniotis, E. et al. Solid-State Synthesis and Thermoelectric Properties of Sb-Doped Mg2Si Materials. J. Electron. Mater. 42, 1827–1834 (2013). https://doi.org/10.1007/s11664-012-2442-6

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  • DOI: https://doi.org/10.1007/s11664-012-2442-6

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