SYNTHESIS OF MICROCRYSTALLINE BAZRO3 VIA MOLECULAR PRECURSOR ROUTE

A molecular precursor barium zirconyl oxalate (BZO) was synthesized by exchange reaction between freshly generated water soluble sodium zirconyl oxalate and Ba-nitrate solutions at room temperature. The controlled pyrolysis of BZO in air at 800-degrees-C/6 h resulted in the formation of single-phase cubic microcrystalline barium zirconate powder. These powders exhibit variable-shaped agglomerates with an average size almost-equal-to 0.2 mum having a surface area almost-equal-to 2.63 m2/gm.