Formation of icosahedral quasicrystals in (Ag,Au)-based ternary systems

R. Tamura; A. Katahoka; K. Nishimoto; S. Takeuchi

doi:10.1016/j.jnoncrysol.2007.06.021

Formation of icosahedral quasicrystals in (Ag,Au)-based ternary systems

R. Tamura, A. Katahoka, K. Nishimoto, S. Takeuchi

Center for Exploration of New Inorganic Materials

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

4 Citations (Scopus)

Abstract

We investigated the phase constitution of rapidly solidified (Ag,Au)-based ternary alloys at various compositions of (M,X)_85.7RE_14.3 (M = Ag, Au, X = Al,Ga,In, RE = Er,Lu). It is found that an icosahedral phase is formed at an average electrons per atom ratio close to 2.0 as well as at the composition ratio of (M,X)₆RE, suggesting that these factors have crucial roles in the stability of the icosahedral phases. It is also found that the trend of the icosahedral phase formation in the Au-based alloys is quite different from that in the Ag-based alloys.

Original language	English
Pages (from-to)	3412-3416
Number of pages	5
Journal	Journal of Non-Crystalline Solids
Volume	353
Issue number	32-40
DOIs	https://doi.org/10.1016/j.jnoncrysol.2007.06.021
Publication status	Published - 2007 Oct 15

Keywords

Amorphous metals
Electron diffraction
Metallic glasses
Quasicrystals
X-ray diffraction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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AU - Tamura, R.

AU - Katahoka, A.

AU - Nishimoto, K.

AU - Takeuchi, S.

PY - 2007/10/15

Y1 - 2007/10/15

N2 - We investigated the phase constitution of rapidly solidified (Ag,Au)-based ternary alloys at various compositions of (M,X)85.7RE14.3 (M = Ag, Au, X = Al,Ga,In, RE = Er,Lu). It is found that an icosahedral phase is formed at an average electrons per atom ratio close to 2.0 as well as at the composition ratio of (M,X)6RE, suggesting that these factors have crucial roles in the stability of the icosahedral phases. It is also found that the trend of the icosahedral phase formation in the Au-based alloys is quite different from that in the Ag-based alloys.

AB - We investigated the phase constitution of rapidly solidified (Ag,Au)-based ternary alloys at various compositions of (M,X)85.7RE14.3 (M = Ag, Au, X = Al,Ga,In, RE = Er,Lu). It is found that an icosahedral phase is formed at an average electrons per atom ratio close to 2.0 as well as at the composition ratio of (M,X)6RE, suggesting that these factors have crucial roles in the stability of the icosahedral phases. It is also found that the trend of the icosahedral phase formation in the Au-based alloys is quite different from that in the Ag-based alloys.

KW - Amorphous metals

KW - Electron diffraction

KW - Metallic glasses

KW - Quasicrystals

KW - X-ray diffraction

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Formation of icosahedral quasicrystals in (Ag,Au)-based ternary systems

Abstract

Keywords

ASJC Scopus subject areas

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