Thermoelectric properties of a clathrate compound Ba8Cu16P30
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ID | 19312 |
本文ファイル | |
著者 |
Huo, Dexuan
Sasakawa, Tetsuya
Muro, Yuji
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抄録 | We report the electrical resistivity (ρ), thermoelectric power (S), thermal conductivity (κ), and specific heat (C) for the clathrate compound Ba8Cu16P30
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抄録(英) | in which polyhedral cages are composed of Cu and P atoms. Being in contrast to the n-type conduction in most of clathrate compounds, a p-type metallic conduction in this compound is indicated by the positive S, which monotonically increases up to 65 μV/K at 460 K. The analysis of C(T) gives indirect evidence for low-frequency local vibrations of Ba atoms with two Einstein temperatures 120 and 90 K, respectively. These local vibrations lead to a low lattice thermal conductivity of 2.9 W/K m at 300 K. The combination of the metallic resistivity, large thermoelectric power, and low thermal conductivity, makes this compound be a prospective thermoelectric material.
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掲載誌名 |
Applied Physics Letters
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巻 | 82巻
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号 | 16号
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開始ページ | 2640
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終了ページ | 2642
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出版年月日 | 2003-04-21
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出版者 | American Institute of Physics
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ISSN | 0003-6951
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NCID | |
出版者DOI | |
言語 |
英語
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NII資源タイプ |
学術雑誌論文
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広大資料タイプ |
学術雑誌論文
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DCMIタイプ | text
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フォーマット | application/pdf
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著者版フラグ | publisher
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権利情報 | Copyright (c) 2003 American Institute of Physics.
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関連情報URL | |
部局名 |
先端物質科学研究科
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