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Bulk Synthesis of Completely and Partially Sn filled CoSb3 Using the Multilayer Repeat Method

Published online by Cambridge University Press:  01 February 2011

Heike Sellinschegg ,
David C. Johnson ,
Michael Kaeser ,
Terry M. Tritt ,
George S. Nolas  and
E. Nelson
Heike Sellinschegg
Affiliation:
University of Oregon, Dept. of Chemistry and Materials Science Institute, Eugene, OR 97403
David C. Johnson
Affiliation:
University of Oregon, Dept. of Chemistry and Materials Science Institute, Eugene, OR 97403
Michael Kaeser
Affiliation:
Clemson University, Department of Physics, Clemson, SC 29634
Terry M. Tritt
Affiliation:
Clemson University, Department of Physics, Clemson, SC 29634
George S. Nolas
Affiliation:
R & D Division, Marlow Industries, Dallas, TX 75238
E. Nelson
Affiliation:
U.S. Army Research Laboratory, Adelphi, ML 20783
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Abstract

Filled skutterudite compounds possess very low thermal conductivities due to the scattering of a wide range of phonon modes caused by a loosely bound cation incorporated in a cavity of the structure. The inclusion of such a filler cation causes several synthetic difficulties since the desired compounds are thermodynamically unstable with respect to disproportionation. Modulated elemental reactants were used in this study to circumvent these difficulties. SnxCo4Sb12 samples with x=0.5 and nearly 1.0 were synthesized using this method. To prevent nucleation of unwanted binary compounds, the repeat unit made up of elemental layers was less than 20 angstroms 500mg of each sample were produced, allowing for the samples to be hot pressed into a pellet. Structural analysis as well as measurements of the physical properties are presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 626: Symposium Z – Thermoelectric Materials 2000 - The Next Generation Materials for Small-Scale Refrigeration and Power Generation Applications , 2000 , Z10.2
Copyright
Copyright © Materials Research Society 2000

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References

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