The structure of an Al?Ni?Co pentagonal quasicrystal studied by high-angle annular detector dark-field electron microscopy
The structure of an Al?Ni?Co pentagonal quasicrystal studied by high-angle annular detector dark-field electron microscopy
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DOI：
10.1080/0950083001001344
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发表时间：
2001-02
影响因子：
1.2
通讯作者：
K. Hiraga;T. Ohsuna;Sinya Nishimura
中科院分区：
文献类型：
--
作者：
K. Hiraga;T. Ohsuna;Sinya Nishimura
用高角环形探测器暗场技术和扫描透射电子显微镜研究了一种具有五角对称性和超晶格反射的Al-Ni-Co五角准晶的电子衍射花样。过渡金属原子在其中心周围呈五边形排列的柱状团簇以键长为2nm的菱形平铺排列，所有的团簇都具有相同的五边形对称取向。
An Al-Ni-Co pentagonal quasicrystal, showing electron diffraction patterns with pentagonal symmetry and including so-called superlattice reflections, has been examined by the high-angle annular detector dark-field technique with scanning transmission electron microscopy. Columnar clusters with a pentagonal arrangement of transition-metal atoms around their centres are arrayed in a rhombic tiling with a bond length of 2nm, all the clusters having the same orientation of pentagonal symmetry.