Nanoscale inclusions in the phonon glass thermoelectric material Zn 4Sb3

Prytz; A. E. Gunnæs; O. B. Karlsen; T. H. Breivik; E. S. Toberer; G. Jeffrey Snyder; J. Taftø

doi:10.1080/09500830902950464

Nanoscale inclusions in the phonon glass thermoelectric material Zn ₄Sb₃

Prytz, A. E. Gunnæs, O. B. Karlsen, T. H. Breivik, E. S. Toberer, G. Jeffrey Snyder, J. Taftø

Materials Science and Engineering

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

31 Scopus citations

Abstract

We have investigated the thermoelectric material Zn₄Sb ₃ using transmission electron microscopy (TEM). Nanoscale inclusions with a diameter of about 10 nm were observed, constituting on the order of 1% by volume of the material. Studies using energy filtered imaging, electron diffraction, and high-angle annular dark-field STEM indicate that the inclusions consist of Zn. These inclusions are expected to scatter the medium and long-wavelength phonons effectively, thus contributing to phonon glass behavior which results in the exceptionally low thermal conductivity for this thermoelectric material.

Original language	English (US)
Pages (from-to)	362-369
Number of pages	8
Journal	Philosophical Magazine Letters
Volume	89
Issue number	6
DOIs	https://doi.org/10.1080/09500830902950464
State	Published - Jun 2009

Funding

The authors would like to acknowledge financial support from the Norwegian Research Council and the Caltech MURI program. We would also like to thank Douglas Medlin for discussions.

Keywords

Nanoparticles
Phonon glass
TEM
Thermoelectric material

ASJC Scopus subject areas

Condensed Matter Physics

Access to Document

10.1080/09500830902950464

Cite this

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abstract = "We have investigated the thermoelectric material Zn4Sb 3 using transmission electron microscopy (TEM). Nanoscale inclusions with a diameter of about 10 nm were observed, constituting on the order of 1% by volume of the material. Studies using energy filtered imaging, electron diffraction, and high-angle annular dark-field STEM indicate that the inclusions consist of Zn. These inclusions are expected to scatter the medium and long-wavelength phonons effectively, thus contributing to phonon glass behavior which results in the exceptionally low thermal conductivity for this thermoelectric material.",

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AU - Prytz,

AU - Gunnæs, A. E.

AU - Karlsen, O. B.

AU - Breivik, T. H.

AU - Toberer, E. S.

AU - Jeffrey Snyder, G.

AU - Taftø, J.

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AB - We have investigated the thermoelectric material Zn4Sb 3 using transmission electron microscopy (TEM). Nanoscale inclusions with a diameter of about 10 nm were observed, constituting on the order of 1% by volume of the material. Studies using energy filtered imaging, electron diffraction, and high-angle annular dark-field STEM indicate that the inclusions consist of Zn. These inclusions are expected to scatter the medium and long-wavelength phonons effectively, thus contributing to phonon glass behavior which results in the exceptionally low thermal conductivity for this thermoelectric material.

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KW - Thermoelectric material

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