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Understanding Fivefold Symmetry in Electron-Diffraction Patterns

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摘要: The electron-diffraction patterns with 5-fold rotational symmetry of the experimental Al-Mn alloy phase reported by Shechtman et al. are assumed to be produced by a periodic structure. A three-dimensional periodic structure is presented based on two kind polyhedrons. The structure can be used as an atomic model to describe the alloy phase. The Fourier-transform patterns of the model are simulated along six “symmetry directions”. The chemical composition of the model is similar to that of the Al-Mn alloy phase. Details of the motivations and approaches that lead to these models are discussed. This study suggests that non classical periodic structures are also well candidates to describe quasicrystals


 

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[V3] 2024-05-24 12:20:17 ChinaXiv:202403.00361V3 下载全文
[V2] 2024-04-22 10:25:39 ChinaXiv:202403.00361v2 查看此版本 下载全文
[V1] 2024-03-27 11:29:49 ChinaXiv:202403.00361v1 查看此版本 下载全文
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