Azough, F. et al. (2016) Ba6−3x Nd8+2x Ti18O54 tungsten bronze: a new high-temperature n-type oxide thermoelectric. Journal of Electronic Materials, 45(3), pp. 1894-1899. (doi: 10.1007/s11664-015-4275-6)
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Abstract
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.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Knox, Professor Andrew and Siviter, Dr Jonathan and Li, Dr Wenguang and Mullen, Mr Paul and Montecucco, Dr Andrea and Han, Dr Guang and Paul, Professor Douglas and Paul, Professor Manosh and Gregory, Professor Duncan |
Authors: | Azough, F., Freer, R., Yeandel, S. R., Baran, J. D., Molinari, M., Parker, S. C., Guilmeau, E., Kepaptsoglou, D., Ramasse, Q., Knox, A., Gregory, D., Paul, D., Paul, M., Montecucco, A., Siviter, J., Mullen, P., Li, W., Han, G., Man, E. A., Baig, H., Mallick, T., Sellami, N., Min, G., and Sweet, T. |
College/School: | College of Science and Engineering > School of Chemistry College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering College of Science and Engineering > School of Engineering > Systems Power and Energy |
Journal Name: | Journal of Electronic Materials |
Publisher: | Springer |
ISSN: | 0361-5235 |
ISSN (Online): | 1543-186X |
Published Online: | 30 December 2015 |
Copyright Holders: | Copyright © 2015 The Authors |
First Published: | First published in Journal of Electronic Materials 45(3):1894-1899 |
Publisher Policy: | Reproduced under a Creative Commons License |
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