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Thermoelectric Properties of the AIPdMn Quasicrystalline System

Published online by Cambridge University Press:  10 February 2011

A. L. Pope ,
T. M. Tritt ,
M. Chernikov ,
M. feuerbacher ,
S. Legault ,
R. Gagnon  and
J. Strom-Olsen
A. L. Pope
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 and Engineering Department, Clemson University, Clemson, SC
M. Chernikov
Affiliation:
Institut fuer Mikrostrukturforschung, Forschungszentrum Juelich GMBH, D-52425 Juelich, Germany
M. feuerbacher
Affiliation:
Institut fuer Mikrostrukturforschung, Forschungszentrum Juelich GMBH, D-52425 Juelich, Germany
S. Legault
Affiliation:
McGill University
R. Gagnon
Affiliation:
McGill University
J. Strom-Olsen
Affiliation:
McGill University
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Abstract

We have begun a systematic investigation the electrical transport properties of the AlPdMn quasicrystalline system. Resistivity and thermopower measurements have been performed over a temperature range between 5K and 320K. In the pure, single phase Al70Pd20Mn10 we have observed thermopowers as high as +80 μV/K around room temperature with resistivities of 1.5 mΩ-cm. Thermal conductivity measurements have been performed yielding values less than 2 W/m-K for all the samples investigated to date. We will discuss how the thermopower and resistivity vary as a result of differing sample composition as well as different processing and annealing conditions. Several different preparation techniques have been employed to further understand how various factors affect the thermal and electrical properties of this quasicrystalline system and how these may be adjusted to optimize these materials for possible thermoelectric applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 545: Symposium Z – Thermoelectric Materials 1998 - The Next Generation… , 1998 , 413
Copyright
Copyright © Materials Research Society 1999

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References

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