Incommensurate crystallographic shear structure of BaxBi2-2xTi4-xO11-4x (x=0.275)

被引：14
|
作者：
Michiue, Y
Yamamoto, A
Onoda, M
Sato, A
Akashi, T
Yamane, H
Goto, T
机构：
[1] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan
[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[3] Tohoku Univ, Interdisciplinary Res Ctr, Tsukuba, Ibaraki 3050044, Japan
来源：
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE | 2005年 / 61卷
关键词：
D O I：
10.1107/S0108768105001655
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The title compound generates diffraction patterns which are indexable within the framework of the higher-dimensional description of incommensurate structures. However, it is difficult to discriminate the main reflections from the satellite ones. This paper has clarified that the structure can be treated as a strongly modulated structure with sawtooth-like modulation functions and is classified as an incommensurate crystallographic shear ( CS) structure. The structure consists of domains isostructural to beta- Bi2Ti4O11 and domain boundaries composed of TiO6 octahedra. Ba and Bi ions are accommodated in the cavities between TiO6 octahedra in the domain. Domain boundaries are aperiodically inserted, in contrast to the usual CS structures, forming an incommensurate structure.
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收藏
页码：145 / 153
页数：9
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