Control Of Polymorphism In Nanbo_3 By Hydrothermal Synthesis

摘要

The metastable ilmenite polymorph of NaNbO_3, instead of the expected perovskite polymorph, may be prepared directly in one step under mild hydrothermal conditions by lowering pH and using close to stoichiometric amounts of metal precursors; in situ energy-dispersive X-ray diffraction shows that crystallisation occurs rapidly via a sequence of intermediate crystalline phases.