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Investigation of i-AlCuFe Quasicrystals and their ω and β Approximants as Thermoelectric Materials

Published online by Cambridge University Press:  21 March 2011

P. N. Alboni ,
A. L. Pope ,
T. M. Tritt ,
A. R. Ross ,
C. Jenks  and
D. Sordelet
P. N. Alboni
Affiliation:
Clemson University, Clemson, SC
A. L. Pope
Affiliation:
Clemson University, Clemson, SC
T. M. Tritt
Affiliation:
Clemson University, Clemson, SC
A. R. Ross
Affiliation:
Ames Laboratory, Ames, IA
C. Jenks
Affiliation:
Ames Laboratory, Ames, IA
D. Sordelet
Affiliation:
Ames Laboratory, Ames, IA
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Abstract

In the search for new thermoelectric materials, quasicrystals have been investigated due to their inherently low thermal conductivity. Crystalline phases called approximants which are closely related to the quasicrystals, however, have largely been ignored. These approximants have similar structure, yet the periodicity of a crystal. In this paper, we have investigated an icosahedral i-AlCuFe quasicrystalline phase as well as two of its corresponding approximant phases (ω and β). Electrical and thermal transport properties of these materials are presented. The viability of the i-AlCuFe quasicrystalline system and the ω and β approximant phases as thermoelectric materials is discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 691: Symposium G – Thermoelectric Materials 2001--Research and Applications , 2001 , G8.12
Copyright
Copyright © Materials Research Society 2002

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References

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