Defect structure of xY2O3 · (1 − x)TiO2 (x = 0.5–0.58) solid solutions
作者： L. P. Lyashenko , L. G. Shcherbakova , E. S. Kulik , R. D. Svetogorov , Ya. V. Zubavichus
DOI: 10.1134/S0020168514120152
关键词: Crystallography 、 Phase (matter) 、 Sorption 、 Characterization (materials science) 、 Lattice constant 、 Solid solution 、 Materials science 、 Diffraction 、 Catalysis 、 Synchrotron
摘要: X-ray diffraction characterization with monochromatic synchrotron X-rays has demonstrated that xY2O3 · (1 − x)TiO2 (x = 0.5–0.58) solid solutions consist of a fluorite-like (Fm3m) disordered phase and nanoscale (≃40–1000 nm) pyrochlore-like (Fd3m) ordered the same composition, coherent phase. In composition range (0.5 ≤ x 0.58), lattice parameter follows Vegard’s law. The formation nanodomains different degrees order is shown to be caused by internal strain due high density structural defects in their unit cells. materials obtained this study possess enhanced sorption capacity can used as catalysts, catalyst supports, gas sensors, etc.
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