Journal of Applied Crystallography

Volume 46, Part 6 (December 2013)


research papers



J. Appl. Cryst. (2013). 46, 1817-1822    [ doi:10.1107/S0021889813026216 ]

Ordered and twinned structure in hexagonal-based potassium tungsten bronze nanosheets

S. Jia, H. Sang, W. Zhang, H. Zhang, H. Zheng, L. Liao and J. Wang

Abstract: Non-stoichiometric hexagonal-based potassium tungsten bronze (KxWO3) nanosheets were synthesized by oxidizing tungsten foil in potassium hydroxide. The tungsten bronze nanosheets exhibited an ordered monoclinic superstructure as revealed by X-ray diffraction patterns. Further detailed structural investigation by employing electron microscopy techniques showed the coexistence of 120° rotation twinning variants in the superstructure phase, which may result from the rotation symmetry reduction induced by the ordered arrangements of K vacancies during crystal growth.

Keywords: potassium tungsten bronze; nanomaterials; order; twinning.


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[ doi:10.1107/S0021889813026216/nb5085sup1.pdf ]
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