Structural study of an Al72Ni20Co8 decagonal quasicrystal using the high-angle annular dark-field method

Koh Saitoh, Kenji Tsuda, Michiyoshi Tanaka, Kenji Kaneko, An Pang Tsai

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)

Abstract

High-angle annular dark-field (HAADF) images of an Al72Ni20Co8 decagonal quasicrystal have been taken for the first time. It has been found that the transition metals form pentagonal and star-shaped cluster columns with radii of about 0.4 nm. The atom-cluster columns with a 2 nm diameter of the alloy, which have been considered as the basic structural unit with decagonal symmetry so far, have been revealed to have no decagonal symmetry. These atom-cluster columns have been found to be decomposed into the pentagonal and star-shaped cluster columns, corresponding clusters existing in the Al13Fe4 monoclinic approximant. The tiling of the pentagonal and star-shaped clusters has been found to agree with the rhombic Penrose lattice for an area with a diameter greater than 50 nm.

Original languageEnglish
Pages (from-to)L1400-L1402
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume36
Issue number10 SUPPL. B
DOIs
Publication statusPublished - Oct 15 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Structural study of an Al<sub>72</sub>Ni<sub>20</sub>Co<sub>8</sub> decagonal quasicrystal using the high-angle annular dark-field method'. Together they form a unique fingerprint.

Cite this