Research Output
Ba6−3x Nd8+2x Ti18O54 Tungsten Bronze: A New High-Temperature n-Type Oxide Thermoelectric
  Semiconducting Ba6−3x Nd8+2x Ti18O54 ceramics (with x = 0.00 to 0.85) were synthesized by the mixed oxide route followed by annealing in a reducing atmosphere; their high-temperature thermoelectric properties have been investigated. In conjunction with the experimental observations, atomistic simulations have been performed to investigate the anisotropic behavior of the lattice thermal conductivity. The ceramics show promising n-type thermoelectric properties with relatively high Seebeck coefficient, moderate electrical conductivity, and temperature-stable, low thermal conductivity; For example, the composition with x = 0.27 (i.e., Ba5.19Nd8.54Ti18O54) exhibited a Seebeck coefficient of S 1000K = 210 µV/K, electrical conductivity of σ 1000K = 60 S/cm, and thermal conductivity of k 1000K = 1.45 W/(m K), leading to a ZT value of 0.16 at 1000 K.

  • Type:

    Article

  • Date:

    30 December 2015

  • Publication Status:

    Published

  • Publisher

    Springer US

  • DOI:

    10.1007/s11664-015-4275-6

  • ISSN:

    0361-5235

  • Funders:

    Historic Funder (pre-Worktribe)

Citation

Azough, F., Freer, R., Yeandel, S. R., Baran, J. D., Molinari, M., Parker, S. C., …others. (2016). Ba6−3x Nd8+2x Ti18O54 Tungsten Bronze: A New High-Temperature n-Type Oxide Thermoelectric. Journal of Electronic Materials, 45, 1894-1899. https://doi.org/10.1007/s11664-015-4275-6

Authors

Keywords

Oxide ceramic, tungsten bronze, titanate, thermal conductivity, thermoelectric, molecular dynamics, modelling

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