Thermoelectric properties of a clathrate compound Ba8Cu16P30
Applied Physics Letters Volume 82 Issue 16
Page 2640-2642
published_at 2003-04-21
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| File | |
| Title ( eng ) |
Thermoelectric properties of a clathrate compound Ba8Cu16P30
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| Creator |
Huo Dexuan
Sasakawa Tetsuya
Muro Yuji
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| Source Title |
Applied Physics Letters
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| Volume | 82 |
| Issue | 16 |
| Start Page | 2640 |
| End Page | 2642 |
| Abstract |
We report the electrical resistivity (ρ), thermoelectric power (S), thermal conductivity (κ), and specific heat (C) for the clathrate compound Ba8Cu16P30
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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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Institute of Physics
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| Date of Issued | 2003-04-21 |
| Rights |
Copyright (c) 2003 American Institute of Physics.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0003-6951
[DOI] 10.1063/1.1568819
[NCID] AA00543431
[DOI] http://dx.doi.org/10.1063/1.1568819
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