Lattice properties of a model quasicrystalline phase in comparison with those of crystalline and amorphous phases

✍ Scribed by T. Tei; K. Edagawa; S. Takeuchi; K. Masuda-Jindo

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 231 KB
• Volume: 134
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/0921-5093(91)90888-t

✦ Synopsis

The lattice properties of model structures of a binary simple-metal system have been compared between three phases: an icosahedrai phase (I-phase), a Frank-Kasper crystalline phase (FK-phase), and an amorphous phase (a-phase), which have been produced by use of interatomic potentials. The shear modulus of the I-phase is comparable to that of the FK-phase but much larger than the a-phase, reflecting the atomic-packing characteristics of the three phases. The vibrational spectrum has been computed by the recursion method. The spectrum consists of two broad peaks in the FK-phase and one broad peak in the a-phase. The spectrum in the I-phase exhibits an intermediate feature of the above two.