Guo Cong, Jia Shuangfeng, Meng Weiwei, Zheng He, Jin Lei, Liu Yong, Shi Jing, Wang Jianbo
School of Physics and Technology, Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures, Wuhan University, Wuhan 430072, People's Republic of China.
Acta Crystallogr B Struct Sci Cryst Eng Mater. 2013 Dec;69(Pt 6):589-94. doi: 10.1107/S2052519213024664. Epub 2013 Oct 23.
This paper presents a study on orientation domains in the vacancy-ordered titanium monoxide TiO(x). Transmission electron microscopy analysis revealed the co-existence of 12 possible TiO(x) monoclinic domain variants, which are induced by the cubic-to-monoclinic phase transition attributed to the Ti and O vacancy ordering. These 12 monoclinic domain variants which are predicted by group theory might be randomly arranged. Furthermore, several hours of electron beam irradiation can lead to the vacancy ordering-disordering transition (i.e. monoclinic-to-cubic phase transformation) in TiO(x). Our results shed light on the structural characteristics in TiO(x) nanostructures and thus contribute to the fabrication and design of the related nanostructures.
本文介绍了一项关于空位有序的一氧化钛TiO(x)中取向畴的研究。透射电子显微镜分析揭示了12种可能的TiO(x)单斜畴变体的共存，这些变体是由Ti和O空位有序化导致的立方相到单斜相转变所引起的。这12种单斜畴变体由群论预测，可能是随机排列的。此外，数小时的电子束辐照可导致TiO(x)中空位有序 - 无序转变（即单斜相到立方相转变）。我们的结果揭示了TiO(x)纳米结构的结构特征，从而有助于相关纳米结构的制造和设计。
