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Origin of large thermoelectric power in off-stoichiometric Fe2VAl-based alloys
http://hdl.handle.net/2237/20775
http://hdl.handle.net/2237/207757dca014c-7114-4e85-b0fc-a62f7fd4b4b0
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
1757-899X_18_14_142004.pdf (498.5 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2014-11-14 | |||||
| タイトル | ||||||
| タイトル | Origin of large thermoelectric power in off-stoichiometric Fe2VAl-based alloys | |||||
| 言語 | en | |||||
| 著者 |
Soda, K
× Soda, K× Harada, S× Kato, M× Yagi, S× Sandaiji, Y× Nishino, Y |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | Published under licence in Journal of Physics: Conference Series by IOP Publishing Ltd. | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The valence-band and core-level soft x-ray photoelectron spectroscopy has been applied to investigate the origin of the large thermoelectric power in the off-stoichiometric and partially-substituted Fe-based Heusler-type alloys Fe2−x−yIryV1+xAl and Fe2−xV1+x−yTiyAl. The non-rigid-band-like change in the valence-band electronic structure near the Fermi level EF is found for the off-stoichiometric change x in Fe and V concentrations, whereas the rigid-bandlike shift of EF is recognized on the Ir or Ti substitution y. The non-rigid-band-like change may be induced by the excess-V or Fe (anti-site defects)-derived states in the pseudogap of Fe2VAl, while the rigid-band-like shift may be caused by a common band formation, where the d states of the substituted elements are incorporated into the main Fe-V 3d bands. The V2p core-level spectra consistently show the satellite structure due to the excess V as the anti-site defect. A model electronic structure is presented for explaining the observed enhancement of their thermoelectric power. | |||||
| 言語 | en | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 3rd International Congress on Ceramics (ICC3), Symposium 9C: Ceramics for Electricity; Direct Conversion Technology between Heat and Electricity, November 14-18, 2010, Osaka, Japan | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | IOP Publishing | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1088/1757-899X/18/14/142004 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 1757-8981 | |||||
| 書誌情報 |
en : IOP Conference Series: Materials Science and Engineering 巻 18, p. 142004-142004, 発行日 2011-06 |
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| 著者版フラグ | ||||||
| 値 | publisher | |||||
| URI | ||||||
| 識別子 | http://dx.doi.org/10.1088/1757-899X/18/14/142004 | |||||
| 識別子タイプ | DOI | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/20775 | |||||
| 識別子タイプ | HDL | |||||
