Quasi-Unit-Cell Model for an Al-Ni-Co Ideal Quasicrystal based on Clusters with Broken Tenfold Symmetry

Journal Article · Mon May 15 04:00:00 EDT 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.4609· OSTI ID:20216589

Abe, Eiji ^[1]; Saitoh, Koh ^[2]; Takakura, H ^[1]; Tsai, A P ^[1]; Steinhardt, P J ^[3]; Jeong, H -C ^[4]

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1. National Research Institute for Metals, 1-2-1 Sengen, Tsukuba 305-0047, (Japan)
2. Research Institute for Scientific Measurements, Tohoku University, 2-1-1 Katahira, Sendai 980-8577, (Japan)
3. Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States)
4. Department of Physics, Sejong University, Kwangjinku, Seoul 143-747, Korea (Korea, Republic of)

We present new evidence supporting the quasi-unit-cell description of the Al{sub 72}Ni {sub 20}Co{sub 8} decagonal quasicrystal which shows that the solid is composed of repeating, overlapping decagonal cluster columns with broken tenfold symmetry. We propose an atomic model which gives a significantly improved fit to electron microscopy experiments compared to a previous proposal by us and to alternative proposals with tenfold symmetric clusters. (c) 2000 The American Physical Society.

• OSTI ID: 20216589
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 20 Vol. 84; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
ATOMIC CLUSTERS
COBALT ALLOYS
NICKEL ALLOYS
STRUCTURAL MODELS
SYMMETRY BREAKING
THEORETICAL DATA
TRANSMISSION ELECTRON MICROSCOPY