Synthesis and X-Ray Diffraction Study of All Rare-Earth Series Oxides REE_2Ti_2O_7 |
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Institution: | ;1.China University of Geosciences (Beijing) Scientific Research Institute;2.Laboratory of Crystal Structure |
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Abstract: | The pyrochlore supergroup natural minerals are the oxides for formula A2-xB2O7. In this formula, A typically is Ca, Na, TR, Ba, Fe and Mn cation. B is Ta, Ti, Nb, W, Sb. The pyrochlore supergroup is divided into five groups basis of the atomic proportions of the B-site atoms Nb, Ta, Sb, Ti, and W. They are pyrochlore, microlite, roméite, betafite, and elsmoreite, respectively. Some of these minerals containing rare-earth elements species or synthetic oxides have important applications in materials, as for optical materials, light catalyst materials, magnetoelectric materials and radioactive waste treatment etc. |
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