Crystal structure of a hexagonal phase and its relation to a quasicrystalline phase in Zn-Mg-Y alloy

H. Takakura, A. Sato, A. Yamamoto, A. P. Tsai

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

The crystal structure of a Zn-Mg-Y hexagonal phase, considered to be related to that of the quasicrystalline phase, has been determined by single-crystal X-ray diffraction. The atomic model, refined to a final R value of 0.027, has the composition Zn65.22Mg27.92Y6.86 and 92 atoms in a unit cell with lattice constants a = 14.579(2) Å and c = 8.687(1) À and the space group P63/mmc. The Y atoms are situated at two different sites; one is fully occupied by Y atoms, while the other is shared with Mg atoms. The structure can be characterized by a layer structure stacked along the c axis, and also viewed as a columnar structure composed of fused Friauf polyhedras sharing hexagonal rings. The similarity of this hexagonal phase to the MgZn2 phase is shown. The structural relationship between this hexagonal phase and the icosahedral phase is also discussed.

Original languageEnglish
Pages (from-to)263-270
Number of pages8
JournalPhilosophical Magazine Letters
Volume78
Issue number3
DOIs
Publication statusPublished - 1998 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Crystal structure of a hexagonal phase and its relation to a quasicrystalline phase in Zn-Mg-Y alloy'. Together they form a unique fingerprint.

Cite this