Atomic Self-Diffusion in Quasicrystals: A Molecular Dynamics Study
نویسندگان
چکیده
منابع مشابه
Atomic Self-diffusion in Quasicrystals
A molecular dynamics study on atomic self-diffusion in Frank-Kasper type dodecagonal quasicrystals is presented. It is found that the quasicrystal-specific flip mechanism for atomic diffusion, predicted by Kalugin and Katz, indeed occurs in this system. However, in order to be effective, this mechanism needs to be catalyzed by other defects, such as half-vacancies. For this reason, flip diffusi...
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As the order of a quasicrystal is quasiperiodic, it can be described as an irrational cut through a periodic structure in a higher-dimensional space. This mathematical trick has important consequences for the low energy excitations that can occur. Translating the cut space to a different position is a symmetry operation, which changes the quasicrystal structure, but not its energy. A small brea...
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ژورنال
عنوان ژورنال: Defect and Diffusion Forum
سال: 1997
ISSN: 1662-9507
DOI: 10.4028/www.scientific.net/ddf.143-147.815