Abstract
A novel method, sol–gel-hydrothermal process, was employed to prepare Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) powders at a rather lower temperature of 180 °C. The effects of synthesis time on the structure, morphology and size distribution of the powders were studied by the means of XRD, SEM and FTIR. BCZT powders could be obtained at a suitable synthesis time of 12 h, which were well-crystallized and compositional uniform with an average particle size of 93 nm. BCZT ceramics sintered from the synthesized powders had a dense microstructure with a density of 5.59 g/cm3 (> 95%) and excellent properties (2Pr = 25.12 μC/cm2, 2Ec = 4.31 kV/cm, d33 = 492pC/N, er = 9173), indicating the high activity of the BCZT powders by sol–gel-hydrothermal process.
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