Optimizing the thermoelectric efficiency of icosahedral quasicrystals and related complex alloys
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...
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2009 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/42726 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/42726 |
| Access Level: | acceso abierto |
| Palabra clave: | 538.9 Density-of-states Al-Cu-Fe Composition dependence Thermal-conductivity Electronic transport Physical nature Approximants Phases Clusters Mn Física de materiales Física del estado sólido 2211 Física del Estado Sólido |
| Sumario: | 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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