Prytz, Ø. and Gunnæs, A. E. and Karlsen, O. B. and Breivik, T. H. and Toberer, E. S. and Snyder, G. Jeffrey and Taftø, J. (2009) Nanoscale inclusions in the phonon glass thermoelectric material Zn_4Sb_3. Philosophical Magazine Letters, 89 (6). pp. 362-369. ISSN 0950-0839 http://resolver.caltech.edu/CaltechAUTHORS:20090908-111258396
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Abstract
We have investigated the thermoelectric material Zn_4Sb_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.
| Item Type: | Article | ||||||
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| Additional Information: | © 2009 Taylor & Francis. Received 13 January 2009; final version received 5 April 2009. 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. | ||||||
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| Subject Keywords: | thermoelectric material; phonon glass; nanoparticles; TEM | ||||||
| Record Number: | CaltechAUTHORS:20090908-111258396 | ||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20090908-111258396 | ||||||
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| Official Citation: | Prytz, Ø., Gunnæs, A. E., Karlsen, O. B., Breivik, T. H., Toberer, E. S., Jeffrey Snyder, G. and Taftø, J.(2009)'Nanoscale inclusions in the phonon glass thermoelectric material Zn4Sb3',Philosophical Magazine Letters,89:6,362-369. | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 15672 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Tony Diaz | ||||||
| Deposited On: | 01 Oct 2009 17:48 | ||||||
| Last Modified: | 26 Dec 2012 11:20 |
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