He Z, Maurice JL, Ma H, Wang Y, Li H, Zhang T, Ma X, Steurer W. Experimental observation of carousel-like phason flips in the decagonal quasicrystal Al
60Cr
20Fe
10Si
10.
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES 2021;
77:355-361. [PMID:
34473091 DOI:
10.1107/s2053273321007518]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 07/22/2021] [Indexed: 11/11/2022]
Abstract
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.
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