Atomic self-di usion in dodecagonal quasicrystalsa
نویسنده
چکیده
A molecular dynamics study of atomic self-diiusion in Frank-Kasper type do-decagonal quasicrystals is presented. It is found that the quasicrystal-speciic ip mechanism for atomic diiusion, predicted by Kalugin and Katz, indeed occurs in this system. However, in order to be eeective, this mechanism needs to be catalyzed by other defects, such as half-vacancies. For this reason, it is diicult to distinguish from standard vacancy diiusion.
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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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