Evidence for a Cluster-Based Structure of AIPdMn Single Quasicrystals.
Evidence for a Cluster-Based Structure of AIPdMn Single Quasicrystals.
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DOI：
10.1103/physrevlett.77.3827
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发表时间：
1996-10
影响因子：
8.6
通讯作者：
Ebert;Feuerbacher;Tamura;Wollgarten;Urban
中科院分区：
文献类型：
--
作者：
Ebert;Feuerbacher;Tamura;Wollgarten;Urban
本文首次用扫描隧道显微镜研究了真空中原位解理产生的准晶表面。本文研究了二十面体AlPdMn准晶的二重面和五重面。发现表面粗糙。它们的结构是由一个基本簇的基础上形成的簇聚集体决定的，该基本簇的对比度行为和直径约为1 nm，指向Mackay型簇。裂纹扩展发生在簇之间强度较低的沿着区域。这支持了准晶结构的簇方法。
For the first time quasicrystal surfaces produced by in situ cleavage in ultrahigh vacuum have been investigated by scanning tunneling microscopy. Twofold and fivefold surfaces of icosahedral AlPdMn single quasicrystals have been studied. The surfaces were found to be rough. Their structure is determined by cluster aggregates formed on the basis of an elementary cluster whose contrast behavior and diameter of about 1 nm point to the Mackay-type cluster. Crack propagation occurs along zones of lower strength between clusters. This supports the cluster approach to quasicrystal structure.