High-resolution electron microscopy of Al–Ni–Fe decagonal quasicrystal
High-resolution electron microscopy of Al–Ni–Fe decagonal quasicrystal
复制标题
Al-Ni-Fe十方准晶的高分辨率电子显微镜
DOI：
10.1557/jmr.1996.0213
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
K. Park
中科院分区：
文献类型：
--
作者：
K. Hiraga;K. Yubuta;K. Park
用高分辨电子显微镜研究了Al_(71.6)Ni_(23.7)Fe_(4.7)常规凝固合金中形成的具有0.4 nm周期的稳定十方准晶的结构。结果表明，该十方相是最有序的准晶之一，没有检测到任何可检测到的线性相子应变，只有微弱的随机相子应变。这种结构被解释为直径约1.2 nm的十方原子柱的非周期平铺。在计算机模拟的基础上，讨论了特殊局域的原子排列。
The structure of a stable decagonal quasicrystal with 0.4 nm periodicity, formed in a conventionally solidified alloy with composition Al_71.6Ni_23.7Fe_4.7, was investigated by high-resolution electron microscopy. It was found that this decagonal phase is one of the best-ordered quasicrystals, without any detectable linear phason strain and with only weak random phason strain. The structure is interpreted as an aperiodic tiling of decagonal atom columns with a diameter of about 1.2 nm. The atomic arrangements in special local regions are discussed on the basis of computer simulations.