Structural differences between al-fe-cu and al-li-cu quasicrystals studied by high-resolution electron microscopy

Kenji Hiraga, Daisuke Shindo

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Stable icosahedral phases of Al-Fe-Cu and Al-Li-Cu, which are recognized as icosahedral quasicrystals corresponding to face-centered and simple 6D-hypercubic lattices, respectively, were examined by high-resolution electron microscopy with the incident beam parallel to the two-fold symmetry axis. Images observed were analyzed in detail with the aid of computerized image processing. In the image of Al-Li-Cu, a contrast modulation of about τ3 times distance of lattice spacing was observed on lattice fringes perpendicular to the 5-fold symmetry axes, whereas in Al-Fe-Cu, complex contrast modulations with various distances of 2, 3, and 5 lattice spacings were observed on the lattice fringes perpendicular to the same axes.

Original languageEnglish
Pages (from-to)2556-2560
Number of pages5
JournalJapanese journal of applied physics
Volume28
Issue number12 R
DOIs
Publication statusPublished - 1989 Dec

Keywords

  • Al-Fe-Cu
  • Al-Li-Cu
  • High-resolution electron microscopy
  • Icosahedral quasicrystal
  • Quasicrystal

ASJC Scopus subject areas

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

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