Abstract
Defect structures related to crystallographic displacement are revealed in niobium oxides of different composition (Nb2O5, NaNbO3, and solid solutions based on NaNbO3) by X-ray powder diffraction, X-ray fluorescence spectroscopy, and Raman scattering. It is suggested that lattice shear in NaNbO3 and NaNbO3 based solid solutions lead to the block structure of crystals. The effect of the thermodynamic history of objects under study on the formation of a defect structure of this type is demonstrated.
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