Structure refinement of i-Al–Pd–Mn quasicrystals by IP-Weissenberg camera data
Structure refinement of i-Al–Pd–Mn quasicrystals by IP-Weissenberg camera data
复制标题
通过 IP-Weissenberg 相机数据细化 i-Al-Pd-Mn 准晶的结构
DOI：
10.1016/s0925-8388(02)00164-0
复制
发表时间：
2002
影响因子：
6.2
通讯作者：
A. Tsai
中科院分区：
文献类型：
--
作者：
A. Yamamoto;H. Takakura;A. Tsai
报道了用IP-Weissenberg相机对I-Al-Pd-Mn准晶进行的结构修正。先前提出的6D模型[Mater.SCI。论坛150-151(1944)211]被用作改进的初始模型，并在改进期间进行了修改。最终的模型包括91个结构参数，给出了377个独立反射的RW=0.053和R=0.054的R因子。这表明，IP-Weissenberg相机为包含许多弱反射的准晶提供了可靠的数据集。该结构包括两个20ä星团，其中一个类似于2/1近似星团，另外两个较小的星团是Mackay星团及其变体。
The structure refinement of i-Al–Pd–Mn quasicrystals using an IP-Weissenberg camera is reported. A 6D model proposed previously [Mater. Sci. Forum 150–151 (1944) 211] was used as an initial model for the refinement and was modified during the refinement. The final model includes 91 structural parameters and gave R-factors of Rw=0.053 and R=0.054 for 377 independent reflections. This suggests that an IP-Weissenberg camera gives a reliable data set for quasicrystals which includes many weak reflections. The structure includes two 20 Å clusters, one of which is similar to that of the 2/1 approximant and the other two smaller clusters are the Mackay cluster and its variant.