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Effects of the Addition of Rhenium on the Thermoelectric Properties of the AlPdMn Quasicrystalline System

Published online by Cambridge University Press:  01 February 2011

A. L. Pope ,
R. Gagnon ,
R. Schneidmiller ,
P. N. Alboni ,
R. T. Littleton IV ,
B. Zawilski ,
D. Winkler ,
T. M. Tritt ,
J. Strom-Olsen  and
J. Kolis
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A. L. Pope
Affiliation:
Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA
R. Gagnon
Affiliation:
McGill University, Montreal, Canada
R. Schneidmiller
Affiliation:
Department of Chemistry, Clemson University, Clemson, SC 29634, USA
P. N. Alboni
Affiliation:
Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA
R. T. Littleton IV
Affiliation:
Materials Science Department, Clemson University, Clemson, SC 29634, USA
B. Zawilski
Affiliation:
Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA
D. Winkler
Affiliation:
Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA
T. M. Tritt
Affiliation:
Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA Materials Science Department, Clemson University, Clemson, SC 29634, USA
J. Strom-Olsen
Affiliation:
McGill University, Montreal, Canada
J. Kolis
Affiliation:
Department of Chemistry, Clemson University, Clemson, SC 29634, USA Materials Science Department, Clemson University, Clemson, SC 29634, USA
S. Legault
Affiliation:
McGill University, Montreal, Canada
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Abstract

Partially due to their lack of periodic structure, quasicrystals have inherently low thermal conductivity on the order of 1 - 3 W/m-K. AlPdMn quasicrystals exhibit favorable room temperature values of electrical conductivity, 500–800 (Ω-cm)-1, and thermopower, 80 μV/K, with respect to thermoelectric applications. In an effort to further increase the thermopower and hopefully minimize the thermal conductivity via phonon scattering, quartenary Al71Pd21Mn8-XReX quasicrystals were grown. X-ray data confirms that the addition of a fourth element does not alter the quasiperiodicity of the sample. Al71Pd21Mn8-XReX quasicrystals of varying Re concentration were synthesized where x had values of 0, 0.08, 0.25, 0.4, 0.8, 2, 5, 6, and 8. Both thermal and electrical transport property measurements have been performed and are reported.

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 , Z5.1
Copyright
Copyright © Materials Research Society 2000

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References

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