Simultaneous visualization of oxygen vacancies and the accompanying cation shifts in a perovskite oxide by combining annular imaging techniques
Simultaneous visualization of oxygen vacancies and the accompanying cation shifts in a perovskite oxide by combining annular imaging techniques
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DOI：
10.1063/1.4714920
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发表时间：
2012-05-07
影响因子：
4
通讯作者：
Yamamoto, Takahisa
中科院分区：
文献类型：
--
作者：
Kobayashi, Shunsuke;Findlay, Scott D.;Yamamoto, Takahisa
钙钛矿型氧化物中氧空位周围的缺陷结构通过电子态的变化对材料性能起着非常重要的作用。因此，从发展凝聚态物理和技术应用的角度来看，获得这些结构的直接图像至关重要。我们报告的同时可视化的氧空位和周围的钙钛矿型锰氧化物的阳离子迁移的扫描透射电子显微镜。材料的缺陷结构使其易于使用傅立叶分析来获得重要的结构信息，如氧空位位置和附近阳离子柱的位移。(C)2012年美国物理学会。[http：//dx.doi.org/10.1063/1.4714920]
The defect structures around oxygen vacancies in perovskite-type oxides play very important roles in determining material properties through the change of the electronic state. Therefore, from the viewpoint of developing condensed matter physics and technological applications, it is crucial to obtain direct images of these structures. We report the simultaneous visualization of oxygen vacancies and the cation shifts around them in perovskite-type manganite by scanning transmission electron microscopy. The defective structure of the material makes it amenable to using Fourier analysis to obtain important structural information like the oxygen vacancy locations and the shift of nearby cation columns. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4714920]