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Fabrication and thermoelectric properties of layered cobaltite, γ-Sr_{0.32}Na_{0.21}CoO_2 epitaxial films
http://hdl.handle.net/2237/7020
http://hdl.handle.net/2237/7020f3ebe954-ef17-4597-89da-e5e605245afc
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2006-10-23 | |||||
タイトル | ||||||
タイトル | Fabrication and thermoelectric properties of layered cobaltite, γ-Sr_{0.32}Na_{0.21}CoO_2 epitaxial films | |||||
言語 | en | |||||
著者 |
Sugiura, Kenji
× Sugiura, Kenji× Ohta, Hiromichi× Nomura, Kenji× Hirano, Masahiro× Hosono, Hideo× Koumoto, Kunihito |
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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 | Copyright (2006) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. | |||||
抄録 | ||||||
内容記述 | Thermoelectric properties of γ-Sr_0.32Na_0.21CoO_2 epitaxial films, which were fabricated on the (0001)-face of α-Al_2O_3 substrates by ion exchange processes between Na+ and Sr2+ ions with γNa_0.8CoO_2 epitaxial films, were measured to clarify the effect of Sr^2+-ion exchange of γNa_0.8CoO_2 on the thermoelectric properties. Electrical conductivity (σ), Seebeck coefficient (S), and thermoelectric power factor (PF=S^2σ) of the γ-Sr_0.32Na_0.21CoO_2 film (300 K) were 8.9*10^2 S cm^−1, +120 μV K^−1, and 1.2*10^−3 Wm^−1 K^−2, respectively. These values were relatively large compared to those of γ-Na_0.8CoO_2 epitaxial films (σ=1.2*10^3 S cm^−1, S= +95 μV K^−1, and PF=1.1*10^−3 Wm^−1 K^−2). The γ-Sr_0.32Na_0.21CoO_2 epitaxial film exhibited much improved chemical stability against moisture compared to the γ-Na_0.8CoO_2 epitaxial film. The Sr^2+-ion exchange of γ-Na_0.8CoO_2 is vital for practical thermoelectric applications. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Institute of Physics | |||||
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 | 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/10.1063/1.2178768 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0003-6951 | |||||
書誌情報 |
en : Applied Physics Letters 巻 88, 号 8, p. 082109-082109, 発行日 2006-02-20 |
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フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/7020 | |||||
識別子タイプ | HDL |