The structure of Al3Pd: Close relationship to decagonal quasicrystals
The structure of Al3Pd: Close relationship to decagonal quasicrystals
复制标题
Al3Pd的结构：与十方准晶的密切关系
DOI：
--
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
K. Hiraga
中科院分区：
文献类型：
--
作者：
Y. Matsuo;K. Hiraga
本文用单晶X射线分析和高分辨电子显微术相结合的方法测定了Al_3Pd相的晶体结构，它被认为是与周期约为1.6nm的十次准晶密切相关的结构。该原子模型在正交晶胞中具有约280个原子，参数a = 2.336 nm，B = 1.232 nm和c = 1.659 nm，空间群为Pna 21（No.33），通过最小二乘法用Unics III系统将其精修到2348个唯一反射的最终R为0.072。该结构可以表征为十边形原子柱的二维排列。
Abstract The crystal structure of the Al3Pd phase, considered to be a closely related structure to decagonal quasicrystals with a period of about 1.6nm, has been determined by a combination of single-crystal X-ray analysis and high-resolution electron microscopy. The atomic model, which has about 280 atoms in an orthorhombic unit cell with parameters a = 2.336 nm, b = 1.232 nm and c = 1.659 nm and has the space group Pna21 (No. 33), was refined by a least-squares method with the Unics III system to a final R of 0.072 for 2348 unique reflections. The structure can be characterized as a two-dimensional arrangement of decagonal atom columns.