Experimental observation of carousel-like phason flips in the decagonal quasicrystal Al 60 Cr 20 Fe 10 Si 10
Résumé
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 Al 60 Cr 20 Fe 10 Si 10 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.
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20201203-Polarity of atomic flipping in quasicrystals.pdf (2.2 Mo)
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