Acta Crystallographica Section B

Structural Science, Crystal Engineering and Materials

Volume 69, Part 6 (December 2013)

research papers

Acta Cryst. (2013). B69, 589-594    [ doi:10.1107/S2052519213024664 ]

Orientation domains in vacancy-ordered titanium monoxide

C. Guo, S. Jia, W. Meng, H. Zheng, L. Jin, Y. Liu, J. Shi and J. Wang

Abstract: This paper presents a study on orientation domains in the vacancy-ordered titanium monoxide TiOx. Transmission electron microscopy analysis revealed the co-existence of 12 possible TiOx 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 TiOx. Our results shed light on the structural characteristics in TiOx nanostructures and thus contribute to the fabrication and design of the related nanostructures.

Keywords: orientation domains; phase transitions; vacancy ordering; nanostructures.

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