Abstract
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 language | English |
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Pages (from-to) | 824-827 |
Number of pages | 4 |
Journal | Journal of Non-Crystalline Solids |
Volume | 117-118 |
Issue number | PART 2 |
DOIs | |
Publication status | Published - 1990 Feb 1 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Materials Chemistry