research papers
Quasicrystals have special crystal structures with long-range order, but without translational symmetry. Unexpectedly, carousel-like successive flippings of groups of atoms inside the ∼2 nm decagonal structural subunits of the decagonal quasicrystal Al60Cr20Fe10Si10 were directly observed using in situ high-temperature high-resolution transmission electron microscopy imaging. The observed directionally successive phason flips occur mainly clockwise and occasionally anticlockwise. The origin of these directional phason flips is analyzed and discussed.
Keywords: decagonal quasicrystals; TEM; transmission electron microscopy; atomic clusters; clockwise phason flips.
Supporting information
Portable Document Format (PDF) file https://doi.org/10.1107/S2053273321007518/ug5027sup1.pdf | |
Moving Picture Experts Group (MP4) video file https://doi.org/10.1107/S2053273321007518/ug5027sup2.mp4 |