Preparation and thermoelectric properties of CeFe 4As 12

A. Watcharapasorn; R. S. Feigelson; T. Caillat; A. Borshchevsky; G. J. Snyder; J. P. Fleurial

doi:10.1063/1.1427141

Preparation and thermoelectric properties of CeFe ₄As ₁₂

A. Watcharapasorn^*, R. S. Feigelson, T. Caillat, A. Borshchevsky, G. J. Snyder, J. P. Fleurial

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

The thermoelectric properties of CeFe ₄As ₁₂ have been measured. The compound was synthesized by reacting a powder mixture of CeAs ₂ and FeAs ₂ with As metal. The sample was characterized by both x-ray diffractometry and electron microprobe analysis. The Seebeck coefficient, electrical resistivity, Hall effect, and the thermal conductivity were measured between room temperature and about 900 K. The results indicate that CeFe ₄As ₁₂ possesses semimetallic behavior similar to that of CeFe ₄Sb ₁₂ with a room temperature electrical resistivity of 0.49 mcm and a Seebeck coefficient of about 40 μV/K. The thermal conductivity of CeFe ₄As ₁₂ lies between that of CeFe ₄P ₁₂ and CeFe ₄Sb ₁₂ as may be expected from considerations of anionic mass and rattling effect of Ce atoms inside the skutterudite unit cell. A maximum thermoelectric figure of merit value of about 0.4 was obtained at 850 K for this compound.

Original language	English (US)
Pages (from-to)	1344-1348
Number of pages	5
Journal	Journal of Applied Physics
Volume	91
Issue number	3
DOIs	https://doi.org/10.1063/1.1427141
State	Published - Feb 1 2002

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General Physics and Astronomy

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title = "Preparation and thermoelectric properties of CeFe 4As 12 ",

abstract = "The thermoelectric properties of CeFe 4As 12 have been measured. The compound was synthesized by reacting a powder mixture of CeAs 2 and FeAs 2 with As metal. The sample was characterized by both x-ray diffractometry and electron microprobe analysis. The Seebeck coefficient, electrical resistivity, Hall effect, and the thermal conductivity were measured between room temperature and about 900 K. The results indicate that CeFe 4As 12 possesses semimetallic behavior similar to that of CeFe 4Sb 12 with a room temperature electrical resistivity of 0.49 mcm and a Seebeck coefficient of about 40 μV/K. The thermal conductivity of CeFe 4As 12 lies between that of CeFe 4P 12 and CeFe 4Sb 12 as may be expected from considerations of anionic mass and rattling effect of Ce atoms inside the skutterudite unit cell. A maximum thermoelectric figure of merit value of about 0.4 was obtained at 850 K for this compound.",

author = "A. Watcharapasorn and Feigelson, {R. S.} and T. Caillat and A. Borshchevsky and Snyder, {G. J.} and Fleurial, {J. P.}",

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T1 - Preparation and thermoelectric properties of CeFe 4As 12

AU - Watcharapasorn, A.

AU - Feigelson, R. S.

AU - Caillat, T.

AU - Borshchevsky, A.

AU - Snyder, G. J.

AU - Fleurial, J. P.

PY - 2002/2/1

Y1 - 2002/2/1

N2 - The thermoelectric properties of CeFe 4As 12 have been measured. The compound was synthesized by reacting a powder mixture of CeAs 2 and FeAs 2 with As metal. The sample was characterized by both x-ray diffractometry and electron microprobe analysis. The Seebeck coefficient, electrical resistivity, Hall effect, and the thermal conductivity were measured between room temperature and about 900 K. The results indicate that CeFe 4As 12 possesses semimetallic behavior similar to that of CeFe 4Sb 12 with a room temperature electrical resistivity of 0.49 mcm and a Seebeck coefficient of about 40 μV/K. The thermal conductivity of CeFe 4As 12 lies between that of CeFe 4P 12 and CeFe 4Sb 12 as may be expected from considerations of anionic mass and rattling effect of Ce atoms inside the skutterudite unit cell. A maximum thermoelectric figure of merit value of about 0.4 was obtained at 850 K for this compound.

AB - The thermoelectric properties of CeFe 4As 12 have been measured. The compound was synthesized by reacting a powder mixture of CeAs 2 and FeAs 2 with As metal. The sample was characterized by both x-ray diffractometry and electron microprobe analysis. The Seebeck coefficient, electrical resistivity, Hall effect, and the thermal conductivity were measured between room temperature and about 900 K. The results indicate that CeFe 4As 12 possesses semimetallic behavior similar to that of CeFe 4Sb 12 with a room temperature electrical resistivity of 0.49 mcm and a Seebeck coefficient of about 40 μV/K. The thermal conductivity of CeFe 4As 12 lies between that of CeFe 4P 12 and CeFe 4Sb 12 as may be expected from considerations of anionic mass and rattling effect of Ce atoms inside the skutterudite unit cell. A maximum thermoelectric figure of merit value of about 0.4 was obtained at 850 K for this compound.

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Preparation and thermoelectric properties of CeFe ₄As ₁₂

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