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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Thermoelectric properties of layered perovskite-type (Sr1_x Cax)3 (Ti1_y Nby)2 O7

http://hdl.handle.net/2237/8773
http://hdl.handle.net/2237/8773
0ec9553b-2577-424c-bd47-5206bfbb288c
名前 / ファイル ライセンス アクション
JourAppPhys_101-83707.pdf JourAppPhys_101-83707.pdf (781.9 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2007-09-21
タイトル
タイトル Thermoelectric properties of layered perovskite-type (Sr1_x Cax)3 (Ti1_y Nby)2 O7
言語 en
著者 Lee, kyu Hyoung

× Lee, kyu Hyoung

WEKO 19178

en Lee, kyu Hyoung

Search repository
Kim, Sung Wng

× Kim, Sung Wng

WEKO 19179

en Kim, Sung Wng

Search repository
Ohta, Hiromichi

× Ohta, Hiromichi

WEKO 19180

en Ohta, Hiromichi

Search repository
Koumoto, Kunihito

× Koumoto, Kunihito

WEKO 19181

en Koumoto, Kunihito

Search repository
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 (2007) 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 The thermoelectric properties and crystallographic features of layered perovskite-type Ca-substituted (Sr1−xCax)3(Ti1−yNby)2O7 (y=0–0.2), Ruddlesden-Popper phases were investigated. The influence of crystal structure and carrier concentration on the carrier effective mass for Ti-based metal oxides based on TiO6 octahedra and having a significant Ca substitution effect are discussed. It was found from structural analysis that the large Seebeck coefficients of Ca-substituted compounds can be attributed to the high values of carrier effective mass, which originates from the enhancement of the symmetry of the TiO6 octahedra. Low thermal conductivities, 3.6–3.8 W m−1 K−1 at 300 K, were obtained for Ca-substituted compositions due to phonon scattering at SrO/ (SrTiO3)2 interfaces of the inherent superlattice structure and to mass-defect phonon scattering between Ca (MCa=40) and Sr (MSr=88). The highest ZT value obtained was 0.15 at 1000 K, for 10 at % Ca-substituted Sr3(Ti0.95Nb0.05)2O7.
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/10.1063/1.2718280
ISSN
収録物識別子タイプ PISSN
収録物識別子 0021-8979
書誌情報 en : JOURNAL OF APPLIED PHYSICS

巻 101, 号 8, p. 083707-083707, 発行日 2007-04-15
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/8773
識別子タイプ HDL
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