High-Resolution Electron Microscopy and Atomic Arrangements of Al-Mn-Si and Al-Li-Cu Icosahedral Quasicrystals

Kenji Hiraga, Daisuke Shindo

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    Two types of icosahedral quasicrystals of Al-Mn-Si and Al-Li-Cu were examined with a 400 kV high-resolution electron microscope having a resolution of 0.17 nm. Their images taken with the incident beam parallel to the fivefold symmetry axis clearly show a structure model formed by the aggregation of atom clusters with icosahedral symmetry. The observed image contrast of Al-Mn-Si was reproduced by an image calculation of the structure model using the multislice method. The calculation demonstrated that high-resolution images taken with the 400 kV electron microscope faithfully represent projected potential of the quasicrystals.

    Original languageEnglish
    Pages (from-to)567-572
    Number of pages6
    JournalMaterials Transactions, JIM
    Volume31
    Issue number7
    DOIs
    Publication statusPublished - 1990

    Keywords

    • aluminum-lithium-copper
    • aluminum-manganesesilicon
    • high-resolution electron microscopy
    • icosahedral quasicrystal
    • quasicrystal

    ASJC Scopus subject areas

    • Engineering(all)

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