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Thermoelectric properties of Heusler-type off-stoichiometric Fe2V1+xAl1−x alloys
http://hdl.handle.net/2237/22844
http://hdl.handle.net/2237/22844a531bea1-92f1-41f4-861e-b29df9414c9f
| 名前 / ファイル | ライセンス | アクション |
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MRX_miyazaki_NIT_2nd.pdf (853.1 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2015-07-10 | |||||
| タイトル | ||||||
| タイトル | Thermoelectric properties of Heusler-type off-stoichiometric Fe2V1+xAl1−x alloys | |||||
| 言語 | en | |||||
| 著者 |
Miyazaki, Hidetoshi
× Miyazaki, Hidetoshi× Tanaka, Suguru× Ide, Naoki× Soda, Kazuo× Nishino, Yoichi |
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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 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We report the thermoelectric properties of Heusler-type off-stoichiometric Fe2V1+xAl1−x alloys. Due to the off-stoichiometric effect, which is the substitution of V/Al atoms with Al/V atoms, semiconductor-like electric resistivity behavior in Fe2VAl is changed to metallic behavior in Fe2V1+xAl1−x alloys and both positive and negative absolute Seebeck coefficients are drastically increased. The maximum thermoelectric power factor of Fe2V1+xAl1−x alloys is 4.3 × 10−3 (x = −0.03: p-type) and 6.8 × 10−3 W mK−2 (x = 0.05: n-type) with a peak temperature in the range 300–600 K, exceeding the values of previously reported Fe-based Heusler alloys as well as those of available thermoelectric materials such as Bi-Te semiconductors. Based on x-ray diffraction and photoemission spectroscopy results, it is thought that the maintenance of the Heusler-type (L21) crystal structure and the modification of the electronic structure due to the off-stoichiometry could explain the large thermoelectric power factor and high peak temperature in Fe2V1+xAl1−x alloys. | |||||
| 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resource | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1088/2053-1591/1/1/015901 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | EISSN | |||||
| 収録物識別子 | 2053-1591 | |||||
| 書誌情報 |
en : Materials Research Express 巻 1, 号 1, p. 015901-015901, 発行日 2014-03 |
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| 著者版フラグ | ||||||
| 値 | author | |||||
| URI | ||||||
| 識別子 | http://dx.doi.org/10.1088/2053-1591/1/1/015901 | |||||
| 識別子タイプ | DOI | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/22844 | |||||
| 識別子タイプ | HDL | |||||
