Article abstract
Nature Materials 6, 58 - 63 (2007)
doi:10.1038/nmat1799
Atomic structure of the binary icosahedral Yb–Cd quasicrystal
Hiroyuki Takakura1,2, Cesar Pay Gómez3, Akiji Yamamoto2,4, Marc De Boissieu5 and An Pang Tsai2,3
Abstract
Icosahedral quasicrystals (i-QCs) are long-range ordered solids that show non-crystallographic symmetries such as five-fold rotations. Their detailed atomic structures are still far from completely understood, because most stable i-QCs form as ternary alloys suffering from chemical disorder. Here, we present the first detailed structure solution of i-YbCd5.7, one of the very few stable binary i-QCs, by means of X-ray structure determination. Three building units with unique atomic decorations arrange quasiperiodically and fill the space. These also serve as building units in the periodic approximant crystals. The structure is not only chemically feasible, but also provides a seamless structural understanding of the i-YbCd5.7 phase and its series of related i-QCs and approximant crystals, revealing hierarchic features that are of considerable physical interest.
- Division of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
- Solution Oriented Research for Science and Technology, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
- National Institute for Materials Science, Tsukuba 305-0044, Japan
- Laboratoire de Thermodynamique et de Physico-Chimie Métallurgique, UMR CNRS 5614, ENSEEG-INPG, BP 75, 3 8402 Saint Martin d'Hères, France
Correspondence to: Hiroyuki Takakura1,2 e-mail: takakura@eng.hokudai.ac.jp
MORE ARTICLES LIKE THIS
These links to content published by NPG are automatically generated.
RESEARCH
Lattice dynamics of the Zn?Mg?Sc icosahedral quasicrystal and its Zn?Sc periodic 1/1 approximantNature Materials Article (01 Dec 2007)
Alloys A stable binary quasicrystalNature Brief Communication (30 Nov 2000)
Understanding the short- and medium-range structure of metallic glasses remains a difficult challenge. The observation that the medium-range order has the characteristics of a fractal network may have broader implications in the understanding of the relation between structure and mechanical properties in metallic glasses. Understanding the short- and medium-range structure of metallic glasses remains a difficult challenge. The observation that the medium-range order has the characteristics of a fractal network may have broader implications in the understanding of the relation between structure and mechanical properties in metallic glasses. The FSDP position (Nature Materials Letter (01 Jan 2009)
Large AlCuLi single quasicrystals with triacontahedral solidification morphologyNature Letters to Editor (06 Nov 1986)
