Phase stability and electronic structures of YbAl3-xMx (M = Mg, Cu, Zn, In and Sn) studied by first-principles calculations

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Abstract

YbAl3 is a potential thermoelectric (TE) material to be used in TE power generator utilizing waste heat sources. This work systematically investigated the alloying behavior of M in YbAl3-xMx (M = Mg, Cu, Zn, In and Sn) and their electronic structures by first-principles calculations. The solubility of alloying elements M and phase stability of YbAl3-xMx were studied by analyzing the elastic constants, formation and cohesive energies. The results show that Mg, In and Sn are the effective alloying elements for preparing YbAl3-xMx solid solutions, which are helpful for improving TE properties of YbAl3.

Original languageEnglish
Pages (from-to)995-999
Number of pages5
JournalIntermetallics
Volume17
Issue number12
DOIs
StatePublished - Dec 2009
Externally publishedYes

Keywords

  • A. Rare-earth intermetallics
  • E. Ab initio calculations
  • G. Thermoelectric power generation

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