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Enhanced Thermoelectric Properties of Hole-Doped Lu1−x Pb x BaCo4O7 Ceramics

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Abstract

The effects of Pb doping on the thermoelectric properties of Lu1−x Pb x BaCo4O7 (x = 0.00, 0.02, 0.04, 0.06, 0.08, and 0.10) ceramic samples prepared by the solid-state reaction method were investigated from 390 K to 973 K. The results show that Pb doping can reduce the electrical resistivity remarkably, increasing the Seebeck coefficient at lower temperatures and decreasing it at higher temperatures. As an overall result, Pb doping results in an enhancement of the power factor because the decrease in magnitude of the electrical resistivity is far greater than that of the Seebeck coefficient. The optimum Pb doping content is x = 0.08, reaching a power factor and ZT value of 85 μW m−1 K−2 and 0.18, respectively, at 973 K.

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Authors and Affiliations

  1. Key Laboratory of Material Physics of Ministry of Education, and Physical Engineering College, Zhengzhou University, Zhengzhou, 450052, China

    Y.B. Chen, R.X. Ma, F. Gao, X. Hu & H.Z. Song

  2. Zhengzhou Institute of Finance and Economics, Zhengzhou, 450052, China

    X.L. Cao

Authors
  1. Y.B. Chen
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  2. X.L. Cao
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  3. R.X. Ma
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  4. F. Gao
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  5. X. Hu
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  6. H.Z. Song
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Correspondence to H.Z. Song.

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Chen, Y., Cao, X., Ma, R. et al. Enhanced Thermoelectric Properties of Hole-Doped Lu1−x Pb x BaCo4O7 Ceramics. J. Electron. Mater. 44, 3545–3549 (2015). https://doi.org/10.1007/s11664-015-3814-5

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  • DOI: https://doi.org/10.1007/s11664-015-3814-5

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