Abstract
Hydrothermal and hydrothermal-microwave techniques were used to synthesize nanocrystalline (8–20 nm in size) powders of zirconium and hafnium dioxides at 180 and 250°C and fine disperse powders of barium zirconate and hafnate at 150°C (hafnium compounds were first synthesized by the hydrothermal-microwave method). Analysis of physicochemical properties of samples allowed us to reveal the synergetic effect of the hydrothermal treatment and microwave action.
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