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

doi:10.1002/anie.201207076

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

Ames Laboratory

Research output: Contribution to journal › Article › peer-review

42 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 language	English
Pages (from-to)	12699-12702
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	51
Issue number	51
DOIs	https://doi.org/10.1002/anie.201207076
Publication status	Published - 14 Dec 2012
Externally published	Yes

Keywords

intermetallic phases
metal-metal interactions
quasicrystals

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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.",

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AU - Smetana, Volodymyr

AU - Lin, Qisheng

AU - Pratt, Daniel K.

AU - Kreyssig, Andreas

AU - Ramazanoglu, Mehmet

AU - Corbett, John D.

AU - Goldman, Alan I.

AU - Miller, Gordon J.

PY - 2012/12/14

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AB - 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.

KW - intermetallic phases

KW - metal-metal interactions

KW - quasicrystals

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ER -

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

Abstract

Keywords

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