A sodium-containing quasicrystal: Using gold to enhance sodium's covalency in intermetallic compounds

Volodymyr Smetana, Qisheng Lin, Daniel K. Pratt, Andreas Kreyssig, Mehmet Ramazanoglu, John D. Corbett, Alan I. Goldman, Gordon J. Miller*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Golden opportunity: Na13Au12Ga15 is the first Na-containing, thermodynamically stable quasicrystal and was discovered during systematic exploration of the polar intermetallic Na-Au-Ga system. Its electron-to-atom ratio, 1.75, is extremely low for Bergman-type icosahedral phases, but it is the substantial Au content that allows Hume-Rothery stabilization and promotes novel Na-Au polar-covalent interactions, which stabilize the icosahedral phase.

Original languageEnglish
Pages (from-to)12699-12702
Number of pages4
JournalAngewandte Chemie - International Edition
Volume51
Issue number51
DOIs
Publication statusPublished - 14 Dec 2012
Externally publishedYes

Keywords

  • intermetallic phases
  • metal-metal interactions
  • quasicrystals

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