Publication: Optimizing the thermoelectric efficiency of icosahedral quasicrystals and related complex alloys
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2009-11
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American Physical Society
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Abstract
In this work we analyze the potential role of quasicrystals and related alloys in thermoelectric material research. Relatively large figure of merit values are expected for those samples exhibiting two properly located narrow features in the density of states close to the Fermi level. It is expected that optimized quasicrystals will perform better at relatively low temperatures, whereas the ZT curve of complex metallic alloys reaches its maximum at high temperatures. Among state-of-the-art quasicrystals most promising samples for thermoelectric applications are found in the AlPd (Mn,Re) system. Quasicrystalline and related approximants in the ScMgCuGa and CaAuIn systems, synthesized on the basis of pseudogap tuning concepts, appear as promising candidates as well.
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Ā©2009 The American Physical Society.
I warmly thank Kaoru Kimura, Tsunehiro Takeuchi, and Terry M. Tritt for sharing useful information and M. Victoria HernƔndez for a critical reading of the paper. This work has been supported by the Universidad Complutense de Madrid and Banco Santander through Project No. PR34/07-15824.