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Structural studies by high-resolution electron microscopy: tetragonal tungsten bronze-type structures in the system Nb<sub>2</sub>O<sub>5</sub>–WO<sub>3</sub>
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1974
Year
Crystal StructureEngineeringSolid-state ChemistryHigh-resolution Electron MicroscopyThin CrystalsChemistryInorganic MaterialElectron MicroscopyMaterials ScienceObserved Image ContrastCrystalline DefectsCrystal MaterialStructural StudiesCrystallographyCrystal Structure DesignMicrostructureCondensed Matter PhysicsApplied PhysicsMany-beam Lattice Images
The contrast in many-beam lattice images from very thin crystals of 4Nb2O5. 9WO3 is shown to be directly related to its known structure. On the basis of this correlation, the structure of 2Nb2O5.7WO3 is derived from the observed image contrast; it is an ordered intergrowth of the ReO3 and tetragonal tungsten bronze structural types. The structures of typical fault boundaries and disordered intergrowths are described, and those of the reported compounds 6Nb2O3. 11WO3 and 3Nb2O5.8WO3 are discussed.