Modulated Fluorite-Type Structure of Materials from the (1−x)Y0.5Zr0.5O1.75−xY0.75Nb0.25O1.75 (0 ≤ x ≤ 1) System

• DOI: 10.1021/cm991204l
• Publication Date: 2002-07-26T05:54:00Z
• Authors: S. García-Martín; M. A. Alario-Franco; D. P. Fagg; A. J. Feighery; J. T. S. Irvine
• Keywords: Fluorite

The microstructures of different high-temperature prepared oxides the (1−x)Y0.5Zr0.5O1.75−xY0.75Nb0.25O1.75 (0 ≤ x 1) system have been studied by selected-area electron diffraction and high-resolution transmission microscopy. materials show a modulated fluorite-type structure mainly due to partial or short-range ordering oxygen vacancies. modulation is related pyrochlore-type in Y0.75Nb0.25O1.75. A vacancies C-type observed Y0.5Zr0.5O1.75. Gradual transition from pyrochlore structures established with variation composition.