New Development of Thermoelectric Materials Based on Heusler Compounds
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- Nishino Yoichi
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology
Bibliographic Information
- Other Title
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- ホイスラー化合物熱電材料の新展開
- ホイスラー カゴウブツ ネツデンザイリョウ ノ シン テンカイ
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Abstract
The Heusler-type Fe2VAl-based compounds can be a possible candidate for new thermoelectric materials. A significant enhancement in the Seebeck coefficient with both positive and negative sign can be achieved not only by the Fe/V off-stoichiometry combined with doping but also by the V/Al off-stoichiometry even without doping. For the latter alloys, the peak temperature of the Seebeck coefficient increases up to 600 K, and the maximum power factor is 4.3×10−3 for p-type and 6.8×10−3 W/mK2 for n-type, both of which are higher than those of the half-Heusler compound ZrNiSn and Mg2Si compound. A large power factor is required for practical applications of automotive thermoelectric generators. The heavy element Ta doping for the V/Al off-stoichiometric alloys is effective in increasing the dimensionless figure of merit at around 500 K.<br>
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 79 (11), 548-554, 2015
The Japan Institute of Metals and Materials
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Keywords
Details 詳細情報について
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- CRID
- 1390282681458639872
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- NII Article ID
- 130005105612
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- NII Book ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 026843225
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed