| アイテムタイプ |
学術雑誌論文 / Journal Article.(1) |
| 公開日 |
2018-03-13 |
| 書誌情報 |
en : Journal of Applied Physics
巻 120,
号 23,
発行日 2016-12-19
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| タイトル |
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タイトル |
The structural, transport, and magnetic properties of Yb-filled skutterudites YbyFexCo4−xSb12 synthesized under high pressure |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
陳, 玉奇
川村, 幸裕
林, 純一
武田, 圭生
関根, ちひろ
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| 室蘭工業大学研究者データベースへのリンク |
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表示名 |
川村 幸裕（KAWAMURA Yukihiro） |
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URL |
http://rdsoran.muroran-it.ac.jp/html/100000227_ja.html |
| 室蘭工業大学研究者データベースへのリンク |
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表示名 |
武田 圭生（TAKEDA Keiki） |
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URL |
http://rdsoran.muroran-it.ac.jp/html/100000008_ja.html |
| 室蘭工業大学研究者データベースへのリンク |
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表示名 |
関根 ちひろ（SEKINE Chihiro） |
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URL |
http://rdsoran.muroran-it.ac.jp/html/100000003_ja.html |
| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The effects of Fe-substitution on partially Yb filled skutterudites YbyFexCo4-xSb12 are presented from the viewpoint of crystal structure and thermoelectric, magnetic, and transport properties. A series of polycrystalline n-type YbyFexCo4-xSb12 (0.21 ≤ y ≤ 0.47, 0 ≤ x ≤ 0.76) samples were prepared using a high-pressure and high-temperature method. X-ray diffraction data suggest that all the compounds are high-purity skutterudites. For the YbyFexCo4-xSb12 with Yb content higher than 0.29 and Fe content lower than 1, the lattice constant shows a saturated behavior despite the change in the Yb/Fe content. Rietveld refinement based on the synchrotron radiation X-ray data implies that the rectangular Sb4 ring is transformed into square with increasing Yb content and/or Fe substitution content. The Yb valence gradually decreases as the Fe content increases from magnetic susceptibility analysis. According to the specific heat analysis, higher Yb filling benefits the lower Debye temperature while the Fe substitution leads to an increased Debye temperature. The Einstein temperature decreased with increasing Yb filling fraction, but Fe substitution for the Co site does not change the Einstein temperature further. Fe-substitution causes the reduction of total thermal conductivity κ, which mainly originates from the decrease of electron thermal conductivity contribution. The resistivity, Seebeck coefficient, thermal conductivity, and figure of merit (ZT) were effectively tuned due to the optimization of the carrier concentration. At the same carrier concentration, the hall mobility was decreased by Fe substitution. The proper Fe substitution content (0.2 in Yb0.25Fe0.2Co3.8Sb12) can result in a relatively high effective mass. |
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言語 |
en |
| 出版者 |
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出版者 |
AIP Publishing |
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言語 |
en |
| 出版者版へのリンク |
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表示名 |
10.1063/1.4972194 |
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URL |
https://doi.org/10.1063/1.4972194 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.1063/1.4972194 |
| 日本十進分類法 |
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主題Scheme |
NDC |
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主題 |
428 |
| ISSN |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
0021-8979 |
| 権利 |
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権利情報 |
Copyright 2016 Authors. This article is distributed under a Creative Commons Attribution (CC BY) License. |
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言語 |
en |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| フォーマット |
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内容記述タイプ |
Other |
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内容記述 |
application/pdf |
JAP_120_23_5105 (3.7 MB)
