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Ordered and twinned structure in hexagonal‐based potassium tungsten bronze nanosheets
Author(s) -
Jia Shuangfeng,
Sang Hongqian,
Zhang Wenjing,
Zhang Han,
Zheng He,
Liao Lei,
Wang Jianbo
Publication year - 2013
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889813026216
Subject(s) - tungsten , bronze , superstructure , materials science , crystal twinning , monoclinic crystal system , crystallography , electron diffraction , potassium hydroxide , vanadium , crystal structure , diffraction , metallurgy , chemistry , geology , microstructure , organic chemistry , oceanography , physics , optics
Non‐stoichiometric hexagonal‐based potassium tungsten bronze (K x WO 3 ) 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.