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Orientation domains in vacancy-ordered titanium monoxide
Cong Guo1, Shuangfeng Jia, Weiwei Meng
1School 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.
Abstract:
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.
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