Synthesis of Micro- and Nanocrystalline Powders of Alkali Metaniobates and Metatantalates

摘要

Alkali metaniobates and metatantalates can be prepared by sintering stoichiometric mixtures of alkali nitrates and niobium or tantalum oxyhydroxides between 600 and 650℃. The resultant powders consist of micron-sized particles. Nanopowders of stoichiometric alkali metaniobates and metatantalates can be obtained via sol-gel processing under optimized conditions.