Synthesis, crystal structure, and transport properties of Fe substituted rhombohedral skutterudite derivatives Co4−xFexGe6Se6

Kaya Wei; Yongkwan Dong; Pooja Puneet; Terry M. Tritt; George S. Nolas

doi:10.1016/j.jallcom.2014.06.120

Synthesis, crystal structure, and transport properties of Fe substituted rhombohedral skutterudite derivatives Co4−xFexGe6Se6

Kaya Wei, Yongkwan Dong, Pooja Puneet, Terry M. Tritt, George S. Nolas

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4 Scopus citations

Abstract

We report on the synthesis and low temperature transport properties of rhombohedral derivatives of the cubic skutterudite CoSb3, namely Co4-xFexGe6Se6 with x = 0, 1, 1.5. Rietveld refinement and elemental analyses were used to identify the structure and stoichiometry of the compositions. The thermal conductivity was investigated by employing the Debye model with different phonon-scattering parameters. This investigation demonstrates that Fe substitution is feasible in these skutterudite derivatives and can significantly affect the transport properties as compared with Co4Ge6Se6. © 2014 Elsevier B.V. All rights reserved.

Original language	English (US)
Pages (from-to)	330-333
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	614
DOIs	https://doi.org/10.1016/j.jallcom.2014.06.120
State	Published - Nov 2014
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: K. Wei and G.S. Nolas gratefully acknowledge support from the II-VI Foundation. Y. Dong and G.S. Nolas gratefully acknowledge support from the National Science Foundation and Department of Energy Partnership on Thermoelectric Devices for Vehicle Applications (Grant No. 1048796). P. Puneet and T.M. Tritt acknowledge support, in part, from a KAUST Faculty Initiated Collaboration grant.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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10.1016/j.jallcom.2014.06.120

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title = "Synthesis, crystal structure, and transport properties of Fe substituted rhombohedral skutterudite derivatives Co4−xFexGe6Se6",

abstract = "We report on the synthesis and low temperature transport properties of rhombohedral derivatives of the cubic skutterudite CoSb3, namely Co4-xFexGe6Se6 with x = 0, 1, 1.5. Rietveld refinement and elemental analyses were used to identify the structure and stoichiometry of the compositions. The thermal conductivity was investigated by employing the Debye model with different phonon-scattering parameters. This investigation demonstrates that Fe substitution is feasible in these skutterudite derivatives and can significantly affect the transport properties as compared with Co4Ge6Se6. {\textcopyright} 2014 Elsevier B.V. All rights reserved.",

author = "Kaya Wei and Yongkwan Dong and Pooja Puneet and Tritt, {Terry M.} and Nolas, {George S.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: K. Wei and G.S. Nolas gratefully acknowledge support from the II-VI Foundation. Y. Dong and G.S. Nolas gratefully acknowledge support from the National Science Foundation and Department of Energy Partnership on Thermoelectric Devices for Vehicle Applications (Grant No. 1048796). P. Puneet and T.M. Tritt acknowledge support, in part, from a KAUST Faculty Initiated Collaboration grant. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2014",

month = nov,

doi = "10.1016/j.jallcom.2014.06.120",

language = "English (US)",

volume = "614",

pages = "330--333",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier",

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TY - JOUR

T1 - Synthesis, crystal structure, and transport properties of Fe substituted rhombohedral skutterudite derivatives Co4−xFexGe6Se6

AU - Wei, Kaya

AU - Dong, Yongkwan

AU - Puneet, Pooja

AU - Tritt, Terry M.

AU - Nolas, George S.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: K. Wei and G.S. Nolas gratefully acknowledge support from the II-VI Foundation. Y. Dong and G.S. Nolas gratefully acknowledge support from the National Science Foundation and Department of Energy Partnership on Thermoelectric Devices for Vehicle Applications (Grant No. 1048796). P. Puneet and T.M. Tritt acknowledge support, in part, from a KAUST Faculty Initiated Collaboration grant. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2014/11

Y1 - 2014/11

N2 - We report on the synthesis and low temperature transport properties of rhombohedral derivatives of the cubic skutterudite CoSb3, namely Co4-xFexGe6Se6 with x = 0, 1, 1.5. Rietveld refinement and elemental analyses were used to identify the structure and stoichiometry of the compositions. The thermal conductivity was investigated by employing the Debye model with different phonon-scattering parameters. This investigation demonstrates that Fe substitution is feasible in these skutterudite derivatives and can significantly affect the transport properties as compared with Co4Ge6Se6. © 2014 Elsevier B.V. All rights reserved.

AB - We report on the synthesis and low temperature transport properties of rhombohedral derivatives of the cubic skutterudite CoSb3, namely Co4-xFexGe6Se6 with x = 0, 1, 1.5. Rietveld refinement and elemental analyses were used to identify the structure and stoichiometry of the compositions. The thermal conductivity was investigated by employing the Debye model with different phonon-scattering parameters. This investigation demonstrates that Fe substitution is feasible in these skutterudite derivatives and can significantly affect the transport properties as compared with Co4Ge6Se6. © 2014 Elsevier B.V. All rights reserved.

UR - http://hdl.handle.net/10754/599606

UR - https://linkinghub.elsevier.com/retrieve/pii/S0925838814014765

UR - http://www.scopus.com/inward/record.url?scp=84904288186&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2014.06.120

DO - 10.1016/j.jallcom.2014.06.120

M3 - Article

SN - 0925-8388

VL - 614

SP - 330

EP - 333

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Synthesis, crystal structure, and transport properties of Fe substituted rhombohedral skutterudite derivatives Co4−xFexGe6Se6

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