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Lattice thermal conductivity of self-assembled PbTe-Sb_2Te_3 composites with nanometer lamellae

Ikeda, Teruyuki and Toberer, Eric S. and Ravi, Vilupanur A. and Haile, Sossina M. and Snyder, G. Jeffrey (2007) Lattice thermal conductivity of self-assembled PbTe-Sb_2Te_3 composites with nanometer lamellae. In: 26th International Conference on Thermoelectrics, 2007 (ICT '07). IEEE , Piscataway, NJ, pp. 1-4. ISBN 978-1-4244-2262-3. http://resolver.caltech.edu/CaltechAUTHORS:IKEict07

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Abstract

In the system of PbTe and Sb_2Te_3, a metastable compound Pb_2Sb_6Te_(11) appears by solidification processing. It has been reported that this compound is decomposed into the two immiscible thermoelectric materials forming nanosized lamellar structure by heat treatments. The fraction transformed and the inter-lamellar spacing was systematically investigated. In this work, the thermal conductivities and the electrical resistivities have been measured as functions of annealing time through the transformation and the coarsening processes to clarify the effect of the fraction transformed and the inter-lamellar spacing. The thermal conductivity of Pb_2Sb_6Te_(11) is lower than that after the decomposition. The lattice part of the thermal conductivity of PbTe/Sb_2Te_3 lamellar samples decreases with decreasing inter-lamellar spacing. This is considered to be due to the coarsening of the microstructure.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1109/ICT.2007.4569408DOIArticle
http://ieeexplore.ieee.org/document/4569408/PublisherArticle
ORCID:
AuthorORCID
Ikeda, Teruyuki0000-0001-7076-6958
Haile, Sossina M.0000-0002-5293-6252
Snyder, G. Jeffrey0000-0003-1414-8682
Alternate Title:Lattice thermal conductivity of self-assembled PbTe-Sb2Te3 composites with nanometer lamellae
Additional Information:© 2008 IEEE. This work was supported by the Office of Naval Research and Jet Propulsion Laboratory.
Funders:
Funding AgencyGrant Number
Office of Naval Research (ONR)UNSPECIFIED
JPLUNSPECIFIED
Record Number:CaltechAUTHORS:IKEict07
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:IKEict07
Official Citation:T. Ikeda, E. S. Toberer, V. A. Ravi, S. M. Haile and G. J. Snyder, "Lattice thermal conductivity of self-assembled PbTe-Sb2Te3 composites with nanometer lamellae," 2007 26th International Conference on Thermoelectrics, Jeju Island, 2007, pp. 1-4. doi: 10.1109/ICT.2007.4569408 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4569408&isnumber=4569402
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10345
Collection:CaltechAUTHORS
Deposited By: Jeff Snyder
Deposited On:01 May 2008
Last Modified:10 Jul 2017 17:28

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