Study of cationic substitution in Bi2WO6 and derived structures in the framework of the modular approach
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The possibilities of substitution of lead, alkaline and rare earth, antimony, and tellurium cations for bismuth ions in the structure of the Bi2WO6 ferroelectric and compounds with more complicated derived structures have been studied. The trends in the formation of solid solutions are well described in the framework of the modular approach in which layers are treated as building units of crystal structures. The underlying existence criteria (electroneutrality, geometric and chemical compatibility of layers) formulated for simple (two-layer) structures can be easily extended to more complicated (multilayer) structures. On the basis of the results obtained, the existence of new series of layered bismuth oxohalides was predicted.
KeywordsModular Approach BiOCl Perovskite Layer Cationic Substitution Aurivillius Phase
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