Structure of decagonal Al–Ni–Rh

Logvinovich, D.; Simonov, Arkadiy; Steurer, Walter

doi:10.1107/s2052520614010750

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…Gummelt developed covering models to describe the structures of Al-based DQCs 26 65 . Base on the HAADF-STEM images, we suggest that the tiling model rather than Gummelt’s covering model is better to describe the structure of Al-Cr-Fe-Si DQC, where the former is also adopted for the structural description of Al-Ni-Rh DQC solved by X-ray diffraction 66 . As the primary structural block, the D clusters of Al-Cr-Fe-Si DQC connect to the neighboring ones by edge-sharing, without any covering.…”

Section: Resultsmentioning

confidence: 99%

New type of Al-based decagonal quasicrystal in Al60Cr20Fe10Si10 alloy

et al. 2016

Sci Rep

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A new kind of decagonal quasicrystal (DQC) with a periodicity of 1.23 nm was observed in the as-cast quaternary Al60Cr20Fe10Si10 alloy. The intensity distribution of some spots in the selected-area electron diffraction pattern along the tenfold zone axis was found to be different from other Al-based DQCs. High-angle annular dark-field scanning transmission electron microscopy was adopted to reveal the structural features at an atomic level. Both the tenfold symmetry and symmetry-broken decagonal (D) clusters of 1.91 nm in diameter were found, but with structural characteristics different from the corresponding D clusters in the other Al-based DQCs. The neighboring D clusters are connected by sharing one edge rather than covering, suggesting the tiling model is better than the covering model for structural description.

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Section: Resultsmentioning

confidence: 99%

New type of Al-based decagonal quasicrystal in Al60Cr20Fe10Si10 alloy

et al. 2016

Sci Rep

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“…This has never been done before [e.g. see Yamamoto (1996), Yamamoto & Weber (1997), Takakura et al (2000, Cervellino et al (2002) and Logvinovich et al (2014)]. Any appearance of an additional AS discussed in the literature is attributed to the specific atomic decoration and not to the lattice being phason disordered.…”

Section: The Moments Approach For Phasonsmentioning

confidence: 86%

The decagonal AlCuRh quasicrystal modelled with five atomic surfaces – high-temperature X-ray diffraction data analysis

Bugański¹,

Strzałka²,

Wolny³

2022

Acta Cryst Sect A

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Five datasets of high-temperature X-ray diffraction performed upon the decagonal phase of AlCuRh are used to derive the temperature-related structural changes. Two sets of atomic structure refinements are conducted, with four and five atomic surfaces, respectively. The fifth atomic surface emerges as a consequence either of the transition to a tiling with different local isomorphism than the Penrose tiling or of the structure being phason disordered. The correlation of the occupancy of the fifth atomic surface with the thermal dependence of the lattice constants is 80%. In addition, the structural refinement with five atomic surfaces allowed a better agreement with the experimental data to be obtained, compared with the model with four atomic surfaces.

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Insight into the structure of decagonite – the extraterrestrial decagonal quasicrystal

Bugański

Bindi

2021

Int Union Crystallogr J

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A set of X-ray data collected on a fragment of decagonite, Al71Ni24Fe5, the only known natural decagonal quasicrystal found in a meteorite formed at the beginning of the Solar System, allowed us to determine the first structural model for a natural quasicrystal. It is a two-layer structure with decagonal columnar clusters arranged according to the pentagonal Penrose tiling. The structural model showed peculiarities and slight differences with respect to those obtained for other synthetic decagonal quasicrystals. Interestingly, decagonite is found to exhibit low linear phason strain and a high degree of perfection despite the fact it was formed under conditions very far from those used in the laboratory.

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Structure of decagonal Al–Ni–Rh

Cited by 4 publications

References 34 publications

New type of Al-based decagonal quasicrystal in Al60Cr20Fe10Si10 alloy

New type of Al-based decagonal quasicrystal in Al60Cr20Fe10Si10 alloy

The decagonal AlCuRh quasicrystal modelled with five atomic surfaces – high-temperature X-ray diffraction data analysis

Insight into the structure of decagonite – the extraterrestrial decagonal quasicrystal

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