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Thermoelectric properties of Zn_5Sb_4In_(2-δ)(δ=0.15)

Wu, Y. and Litvinchuk, A. P. and Toberer, E. S. and Snyder, G. J. and Newman, N. and Fischer, A. and Scheidt, E.-W. and Scherer, W. and Häussermann, U. (2012) Thermoelectric properties of Zn_5Sb_4In_(2-δ)(δ=0.15). Journal of Applied Physics, 111 (12). Art. No. 123712. ISSN 0021-8979.

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The polymorphic intermetallic compound Zn_5Sb_4In_(2−δ) (δ = 0.15(3)) shows promising thermoelectric properties at low temperatures, approaching a figure of merit ZT of 0.3 at 300 K. However, thermopower and electrical resistivity changes discontinuously at around 220 K. Measurement of the specific heat locates the previously unknown temperature of the order-disorder phase transition at around 180 K. Investigation of the charge carrier concentration and mobility by Hall measurements and infrared reflection spectroscopy indicate a mixed conduction behavior and the activation of charge carriers at temperatures above 220 K. Zn_5Sb_4In_(2−δ) has a low thermal stability, and at temperatures above 470 K samples decompose into a mixture of Zn, InSb, and Zn_4Sb_3.

Item Type:Article
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Snyder, G. J.0000-0003-1414-8682
Additional Information:© 2012 American Institute of Physics. Received 24 April 2012; accepted 17 May 2012; published online 21 June 2012. This work was supported by the National Science Foundation through grant DMR-1007557.
Funding AgencyGrant Number
Subject Keywords: antimony alloys, carrier density, electrical resistivity, Hall mobility, indium alloys, infrared spectra, mixed conductivity, order-disorder transformations, reflectivity, specific heat, thermal stability, thermoelectric power, zinc alloys
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Other Numbering System NameOther Numbering System ID
International Patent Classification (IPC)C22C12/00
International Patent Classification (IPC)C22C18/00
Issue or Number:12
Classification Code:PACS: 72.15.Jf, 72.15.Eb, 78.30.Er, 81.30.Hd, 65.40.Ba, 72.15.Gd
Record Number:CaltechAUTHORS:20120731-090132268
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Official Citation:Thermoelectric properties of Zn5Sb4In2-δ (δ = 0.15) Y. Wu, A. P. Litvinchuk, E. S. Toberer, G. J. Snyder, N. Newman, A. Fischer, E.-W. Scheidt, W. Scherer, and U. Häussermann J. Appl. Phys. 111, 123712 (2012);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32813
Deposited By: Ruth Sustaita
Deposited On:31 Jul 2012 16:49
Last Modified:03 Mar 2020 13:01

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