Publication: Theoretical prospective of quasicrystals as thermoelectric materials
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2001-09-01
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American Physical Society
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Abstract
In this work we present a theoretical study on the possible use of quasicrystals as potential thermoelectric materials. By considering a suitable model for the spectral conductivity we show that high values of the thermoelectric figure of merit, beyond the practical upper limit ZT=1, may be expected for certain quasicrystalline alloys. We also study their performance at different working temperature ranges, favoring low temperature thermoelectric applications for these materials. By comparing our analytical results with available experimental data on the transport coefficients of different quasicrystalline families. we suggest the icosahedral Cd-Yb and the dodecagonal Ta-Te binary phases as two promising candidates for further research.
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©2001 The American Physical Society.
I warmly thank Professor E. Belin, Professor B. Harbrecht, Professor C. Landauro, Professor Z. M. Stadnik, and Professor A. P. Tsai for interesting comments and Dr. T. Grenet, Dr. K. Kirihara, Dr. A. L. Pope, and Professor T. M. Tritt for sharing useful materials. I acknowledge K. Gianno` for sharing information and M. V. Herna´ndez for a critical reading of the manuscript. This work was partially supported by Universidad Complutense de Madrid through Project No. PR64/99-8510