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Thermoelectric Properties of Two Ternary Tellurides

Published online by Cambridge University Press:  10 February 2011

Jeff W. Sharp ,
Brian C. Sales ,
David G. Mandrus  and
Bryan C. Chakoumakos
Jeff W. Sharp
Affiliation:
Research and Development Division, Marlow Industries, Dallas, Texas 75238
Brian C. Sales
Affiliation:
Solid State Division, Oak Ridge National Lab, Oak Ridge, TN, 37831
David G. Mandrus
Affiliation:
Solid State Division, Oak Ridge National Lab, Oak Ridge, TN, 37831
Bryan C. Chakoumakos
Affiliation:
Solid State Division, Oak Ridge National Lab, Oak Ridge, TN, 37831
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Abstract

We present initial assessments of the thermoelectric properties of two ternary tellurides with known crystal structures, Tl2GeTeM5 and Tl2SnTe5. Tl2SnTe5 appears to have a p-type figure of merit about the same as that of Bi2Te3, the best thermoelectric material among binary compounds. A good figure of merit is possible because the lattice thermal conductivity is very low. Based on neutron diffraction data, we have calculated atomic displacement parameters and thermal expansion coefficients. The atomic displacement parameters give some understanding of the low lattice thermal conductivity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 545: Symposium Z – Thermoelectric Materials 1998 - The Next Generation… , 1998 , 391
Copyright
Copyright © Materials Research Society 1999

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