Dynamical phasons in a perfect quasicrystal.
Dynamical phasons in a perfect quasicrystal.
复制标题
完美准晶体中的动态相子。
DOI：
10.1103/physrevlett.63.2741
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发表时间：
1989
影响因子：
8.6
通讯作者：
P. Bancel
中科院分区：
文献类型：
--
作者：
P. Bancel
详细研究了二十面体 AlCuFe 的 X 射线峰值强度的温度依赖性。在 670 C 以上，德拜-沃勒因子的测量表明存在动力相子。相子模式的软化在〜670°C驱动结构转变，低于该温度准晶分解成低对称性相的相干微晶粒。讨论了对准晶体稳定性的影响。
The temperature dependence of x-ray peak intensities of icosahedral AlCuFe is studied in detail. Above 670 C, measurements of the Debye-Waller factor suggest the presence of dynamical phasons. Softening of the phason modes drives a structural transition at∼ 670 C below which the quasicrystal decomposes into coherent micrograins of a lower-symmetry phase. Implications for quasicrystal stability are discussed.