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Improper Ferroelectricity in Stuffed Aluminate Sodalites for Pyroelectric Energy Harvesting
http://hdl.handle.net/2237/26772
http://hdl.handle.net/2237/267723af099a1-67f1-49c6-8666-74481bef04b5
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 | 2017-07-05 | |||||
タイトル | ||||||
タイトル | Improper Ferroelectricity in Stuffed Aluminate Sodalites for Pyroelectric Energy Harvesting | |||||
言語 | en | |||||
著者 |
Maeda, Yusaku
× Maeda, Yusaku× Wakamatsu, Toru× Konishi, Ayako× Moriwake, Hiroki× Moriyoshi, Chikako× Kuroiwa, Yoshihiro× Tanabe, Kenji× Terasaki, Ichiro× Taniguchi, Hiroki |
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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 | © 2017 American Physical Society | |||||
抄録 | ||||||
内容記述 | In the present study, we demonstrate ferroelectricity in stuffed aluminate sodalites (Ca1−xSrx)8[AlO2]12(WO4)2 (x≤0.2) (C1−xSxAW). Pyroelectric measurements clarify switchable spontaneous polarization in polycrystalline C1−xSxAW, whose polarization values are on the order of 10^−2 μC/cm^2 at room temperature. A weak anomaly in the dielectric permittivity at temperatures near the ferroelectric transition temperature suggests improper ferroelectricity of C1−xSxAW for all investigated values of x. A comprehensive study involving synchrotron x-ray powder diffraction measurements, molecular dynamics simulations, and first-principles calculations clarifies that the ferroelectric phase transition of C1−xSxAW is driven by the freezing of the fluctuations of WO4 tetrahedra in the voids of an [AlO2]12^12− framework. The voltage response and electromechanical coupling factor of C1−xSxAW estimated from the present results indicate that this material exhibits excellent performance as a pyroelectric energy harvester, suggesting that aluminate sodalites exhibit great promise as a class of materials for highly efficient energy-harvesting devices. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Physical Society | |||||
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言語 | eng | |||||
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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/10.1103/PhysRevApplied.7.034012 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 2331-7019 | |||||
書誌情報 |
en : Physical Review Applied 巻 7, 号 3, p. 034012-034012, 発行日 2017-03-24 |
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値 | publisher | |||||
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識別子 | http://doi.org/10.1103/PhysRevApplied.7.034012 | |||||
識別子タイプ | DOI | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/26772 | |||||
識別子タイプ | HDL |