Stable decagonal and icosahedral quasicrystals

Akihisa Inoue, An Pang Tsai, Tsuyoshi Masumoto

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)


    Stable icosahedral (I) and decagonal (D) phases were found to be formed in conventionally solidified AlCu(Fe, Ru or Os) and AlCu(Co or Rh) alloys, respectively. The growth morphology is a pentagonal dodecahedron for the I-phase and a column with a cross-sectional shape of decagon for the D-phase. The stable quasicrystals are formed in the criteria of the ratio of the diameter of the Brillouin zone boundary to that of the Fermi sphere (Kp/2kf)≅1.0, the outer electron per atom ration (e/a)=1.7 to 1.8 and the atomic size factor (λ)=0.10 to 0.11.

    Original languageEnglish
    Pages (from-to)824-827
    Number of pages4
    JournalJournal of Non-Crystalline Solids
    Issue numberPART 2
    Publication statusPublished - 1990 Feb 1

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Ceramics and Composites
    • Condensed Matter Physics
    • Materials Chemistry


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