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ID 19312
本文ファイル
著者
Huo, Dexuan
Sasakawa, Tetsuya
Muro, Yuji
抄録
We report the electrical resistivity (ρ), thermoelectric power (S), thermal conductivity (κ), and specific heat (C) for the clathrate compound Ba8Cu16P30
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.
掲載誌名
Applied Physics Letters
82巻
16号
開始ページ
2640
終了ページ
2642
出版年月日
2003-04-21
出版者
American Institute of Physics
ISSN
0003-6951
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2003 American Institute of Physics.
関連情報URL
部局名
先端物質科学研究科