Highly ordered structure of icosahedral quasicrystals in Zn-Mg-Re (Re = rare earth metals) systems

A. P. Tsai, A. Niikura, A. Inoue, T. Masumoto, Y. Nishida, K. Tsuda, M. Tanaka

Research output: Contribution to journalArticlepeer-review

214 Citations (Scopus)

Abstract

A new group of stable icosahedral phases (i-phases) in the Zn-Mg-RE system were found to have an ideal composition close to Znso Mg42RE8 (RE = Y, Gd, Tb, Dy, Ho or Er). The new i-phases exhibit a highly ordered and nearly perfect face-centred icosahedral lattice as revealed by electron and X-ray diffraction and high-resolution electron microscopy. Powder X-ray diffraction indicates that the i-phase has long-range structural order with a correlation length over 1000 A, which is the largest found in the Frank-Kasper group. These new i-phases have the common valence concentration (about 2 08) and could be regarded as a new class of Hume-Rothery alloys.

Original languageEnglish
Pages (from-to)169-175
Number of pages7
JournalPhilosophical Magazine Letters
Volume70
Issue number3
DOIs
Publication statusPublished - 1994 Sep

ASJC Scopus subject areas

  • Condensed Matter Physics

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