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Effect of Ti substitution on the thermoelectric properties of (Zr,Hf)NiSn half-Heusler compounds
Abstract
The effect of Ti substitution on the thermoelectric properties of (Zr,Hf)NiSn half-Heusler compounds was studied. It was found that the substitution of Ti for (Zr,Hf) reduced the thermal conductivity significantly to a low value of 3.0W∕mK at room temperature. In addition, a remarkable enhancement of the Seebeck coefficient due to Ti substitution was observed. Furthermore, doping of the Sn sites in (Ti,Zr,Hf)NiSn with Sb led to a reduction in the electrical resistivity and to a corresponding enhancement of the power factor. In Sb-doped (Ti,Zr,Hf)NiSn compounds, the dimensionless figure of merit, ZT, increased with the increase in temperature and reached a high maximum value of 1.5 at 700K.
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Cited by
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Chadov, S., Qi, X., Kübler, J., Fecher, G. H., Felser, C., & Zhang, S. C. (2010) · Nature Materials · doi:10.1038/nmat2770 · Cited by 927
BiCuSeO oxyselenides: new promising thermoelectric materials
Zhao, L.-D., He, J., Berardan, D., Lin, Y., Li, J.-F., Nan, C.-W., & Dragoe, N. (2014) · Energy Environ. Sci. · doi:10.1039/c4ee00997e · Cited by 722
Material and manufacturing cost considerations for thermoelectrics
LeBlanc, S., Yee, S. K., Scullin, M. L., Dames, C., & Goodson, K. E. (2014) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2013.12.030 · Cited by 503
(2010) · doi:10.1103/physrevb.81.064404 · Cited by 133
Metadata
- Authors
- Sakurada, S., & Shutoh, N.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2005-02-17
- Volume
- 86
- Issue
- 8
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2072973725
- Cited by
- 590
- References
- 0
- FWCI
- 6.45
- Type
- journal article
- Language
- en
- Open access
- closed
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