Japanese Journal of Applied Physics · 2013 · 23 citations · 27 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCrystal StructureMaterials ChemistryCrystal ChemistryCrystal LatticeDopingPerovskite MaterialsRare-earth-doped MaterialsCrystal Structure AnalysisEpitaxial MaterialsHydrothermal ProcessingIntermediate Phase FormationOxide PerovskitesPerovskite Crystal StructureUnit Cell VolumeX-ray Diffraction Analysis
Epitaxial (K x Na 1- x )NbO 3 films with various compositions x were deposited on Nb-doped (100)SrTiO 3 single crystal substrates at 240 °C by the hydrothermal method. Detailed crystal structures were analyzed by X-ray diffraction. All the (K x Na 1- x )NbO 3 films consisted of a perovskite phase without any impurity phase. High-temperature XRD data showed that (K x Na 1- x )NbO 3 films with x = 0.03 and 0.86 transformed to a single cubic phase at 600 °C through the intermediate phase. On the other hand, (K x Na 1- x )NbO 3 films with x = 0.24 showed two diffraction peaks at 600 °C originating from individual phases having different unit cell volumes. The result shows that these films consisted of a mixture of two perovskite phases with K- and Na- rich (K x Na 1- x )NbO 3 composition.
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Yasuyoshi Saito, Hisaaki Takao, Toshihiko Tani et al. · Nature · 2004 · 5.5K citations
A comprehensive study of the phase diagram of KxNa1−xNbO3
D. Baker, P. A. Thomas, N. Zhang et al. · Applied Physics Letters · 2009 · 166 citations
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