Comparative structural study of the disordered MCd6 quasicrystal approximants -: art. no. 024203
Comparative structural study of the disordered MCd6 quasicrystal approximants -: art. no. 024203
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DOI：
10.1103/physrevb.68.024203
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发表时间：
2003-07-01
影响因子：
3.7
通讯作者：
Lidin, S
中科院分区：
文献类型：
--
作者：
Gómez, CP;Lidin, S
合成了几种MCd6准晶（M = Yb和Ca）的近似物（M = Pr, Nd, Sm, Eu, Gd, Dy, Yb， Y和Ca），并通过单晶x射线衍射数据对其结构进行了细化；在这些密切相关的化合物的十二面体腔中央Cd-4四面体的不同类型的无序已经被检查和相互比较。一个模型，描述这种障碍，可以应用于所有检查MCd6阶段已经阐述。对这些阶段所作的改进与以前的报告有所不同。
Several of the MCd6 approximants (M = Pr, Nd, Sm, Eu, Gd, Dy, Yb, Y, and Ca) to the MCd5.7 quasicrystals (M = Yb and Ca) have been synthesized and their structures have been refined from single-crystal x-ray-diffraction data; the different types of disorder of the central Cd-4 tetrahedra located in the dodecahedral cavities of these closely related compounds have been examined and mutually compared. A model that describes this disorder and can be applied to all the examined MCd6 phases has been elaborated. The refinements made on these phases differ from what is found in previous reports.