Czochralski Growth of Decagonal AlCoNi Quasicrystals from Al-rich Solution
نویسندگان
چکیده
منابع مشابه
Atomic Dynamics in Decagonal Al-Ni-Co Quasicrystals
The atomic dynamics of decagonal Al-Ni-Co quasicrystals is investigated by molecular dynamics simulations. The model structures used consist of an alternating stacking of two layers, which are decorations of a hexagon-boat-star tiling. Apart from small relaxations, these model structures are essentially stable up to the melting point. Above two thirds of the melting temperature, a large fractio...
متن کاملOrdered oxide layers on decagonal Al-Co-Ni and icosahedral Al-Pd-Mn quasicrystals
Metal oxides display a variety of crystal structures which often are more complicated compared to the parent metals [1]. In particular, the oxide structures grown on ordered aluminum binary alloys have been an immense challenge for scientists since decades [2]. On NiAl(110), oxygen binds to Al and forms an atomically thin layer of super-cell epitaxy with a huge unit cell. We investigate the str...
متن کاملAluminium diffusion in decagonal quasicrystals.
Aluminium is the majority element in many quasicrystals and expected to be the most mobile element, but its diffusion properties are hardly accessible to experiment. Here we investigate aluminum diffusion in decagonal Al-Ni-Co and Al-Cu-Co quasicrystals by molecular dynamics simulations, using classical effective pair potentials. Above two-thirds of the melting temperature, strong aluminum diff...
متن کاملCluster Models of Decagonal Tilings and Quasicrystals
Two different relaxed versions of Gummelt’s aperiodic cluster covering rules are considered. These relaxed covering rules produce certain random tiling type structures, which are precisely characterized, along with their relationships to various other random tiling ensembles. One variant of the relaxed covering rules allows for a natural realization in terms of a vertex cluster. It is shown wit...
متن کاملAtomic dynamics and diffusion in decagonal quasicrystals
The atomic dynamics of decagonal Al-Ni-Co and Al-Cu-Co quasicrystals is investigated by molecular dynamics simulations. Depending on the local environments, the mobility of the atoms varies greatly from site to site. Above two thirds of the melting temperature, a large fraction of the aluminium atoms become so mobile, that their diffusion can be measured directly in the simulation. As aluminium...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 2013
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.124.344