This study shows that the bonding interactions between metal and oxygen vary strongly with composition, which may affect the fast ionic conduction and resistance to radiation induced structural damage that has been previously reported for these materials. The ionic character of the Ti–O and Gd–O bonds increases while the Sn–O bond becomes more covalent as x increases in the formula, and resulted in changes in energy and/or line shape of the spectra. ![]() Examination of metal K- and L 3-edge XANES spectra from the Gd 2Ti 2− xSn xO 7 system allowed for the elucidation of how the metal–oxygen bond covalency effects the electronic structure of these materials with increasing Sn content. The Gd 2Ti 2− xSn xO 7 (0 ≤ x ≤ 2) system was synthesized by the ceramic method and investigated by X-ray absorption near edge spectroscopy ( XANES), which allows for the examination of the effect of substitution on bonding and the electronic structure of materials. These properties mainly depend on the metal–oxygen bonding interactions and electronic structure of the materials, both of which can change with composition. Pyrochlore-type oxides exhibit a wide variety of properties such as fast ionic conduction, resistance to radiation induced structural damage, and ferro- and antiferro-magnetism. ![]() The titanate and stannate pyrochlore-type oxides have been investigated because of their potential applications in different fields.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |