An electron microscopic study of hexagonal phases related to quasicrystals in Zn-Mg-RE alloys

A. Singh, E. Abe, H. Takakura, A. P. Tsai

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A number of hexagonal phases with inflated/deflated a lattice parameters but equal c parameters are found to exist with compositions close to that of the icosahedral phase. Surprisingly, no cubic or orthorhombic approximants are found. The closeness of the hexagonal phases to the icosahedral phase is shown through the electron diffraction features. Through stereographic analysis of the hexagonal phases it is shown that they consist of three icosahedral units rotated by 120°about a common twofold axis, forming the sixfold axis. It is suggested that this phase falls into a class of crystals closely related to both the icosahedral and decagonal quasicrystals, but are not approximants to them. These phases can instead be considered to be approximant to the hexagonal quasicrystal. (C) 2000 Elsevier Science Ltd.

Original languageEnglish
Pages (from-to)499-505
Number of pages7
JournalMicron
Volume31
Issue number5
DOIs
Publication statusPublished - 2000 Oct 1
Externally publishedYes

Keywords

  • Hexagonal phases
  • Quasicrystals
  • Zn-Mg-RE alloys

ASJC Scopus subject areas

  • Structural Biology
  • Materials Science(all)
  • Physics and Astronomy(all)
  • Cell Biology

Fingerprint Dive into the research topics of 'An electron microscopic study of hexagonal phases related to quasicrystals in Zn-Mg-RE alloys'. Together they form a unique fingerprint.

Cite this