MOLECULAR-DYNAMICS SIMULATION OF NUCLEATION AND GROWTH OF A BINARY QUASI-CRYSTAL

The quasicrystal structure is considered to be a new type of ordered p hase because its Fourier transform has Laue spots with icosahedral sym metry, which is inconsistent with crystal structure. Computer simulati on of the formation process of a quasicrystal was performed by the mol ecular dynamics method. On the basis of the Strandburg type of quasicr ystal model, we developed an algorithm of the formation process of bin ary quasicrystal reflecting the procedure as realistically as possible . The Fourier transform of some of the obtained structures has shown d ecagonal symmetry although the spots are rather diffused. It has been shown that the potential parameter and experimental condition should b e limited to produce a perfect quasicrystal structure.