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 language | English |
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Pages (from-to) | 567-572 |
Number of pages | 6 |
Journal | Materials Transactions, JIM |
Volume | 31 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1990 |
Externally published | Yes |
Keywords
- aluminum-lithium-copper
- aluminum-manganesesilicon
- high-resolution electron microscopy
- icosahedral quasicrystal
- quasicrystal
ASJC Scopus subject areas
- Engineering(all)