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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

High-temperature carrier transport and thermoelectric properties of heavily La- or Nb-doped SrTiO_3 single crystals

http://hdl.handle.net/2237/7049
http://hdl.handle.net/2237/7049
04115982-4905-45b6-adfe-05a2d0366a64
名前 / ファイル ライセンス アクション
JApplPhys_97_034106.pdf JApplPhys_97_034106.pdf (72.4 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2006-10-24
タイトル
タイトル High-temperature carrier transport and thermoelectric properties of heavily La- or Nb-doped SrTiO_3 single crystals
言語 en
著者 Ohta, Shingo

× Ohta, Shingo

WEKO 13997

en Ohta, Shingo

Search repository
Nomura, Takashi

× Nomura, Takashi

WEKO 13998

en Nomura, Takashi

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Ohta, Hiromichi

× Ohta, Hiromichi

WEKO 13999

en Ohta, Hiromichi

Search repository
Koumoto, Kunihito

× Koumoto, Kunihito

WEKO 14000

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 (2005) 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 Electron and thermal transport properties, i.e., electrical conductivity, carrier concentration, Hall mobility, Seebeck coefficient, thermal conductivity, of heavily La- or Nb-doped SrTiO_3 (STO) bulk single crystals were measured at high temperatures, (300–1050 K) to clarify the influence of doping upon the thermoelectric performance of STO. The temperature dependence of Hall mobility and Seebeck coefficient changed at ~750 K in all samples because the dominant mechanism for carrier scattering changed with increasing temperature from coupled scattering by polar optical phonons and acoustic phonons to mere acoustic phonon scattering. The density-of-states effective mass of Nb-doped STO, which was estimated from the carrier concentration and Seebeck coefficient, was larger than that of La-doped STO. Thermal conductivity of the samples, which was similar to that of undoped STO single crystal, decreased proportionally to T^−1, indicating that the phonon conduction takes place predominantly and the electronic contribution to thermal conductivity is negligible.
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/10.1063/1.1847723
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 97, 号 3, p. 034106-034106, 発行日 2005-02-01
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/7049
識別子タイプ HDL
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