Low temperature synthesis of ultrafine Pb(Zr, Ti)O3 powder by sol-gel combustion
作者： J. Schäfer , W. Sigmund , S. Roy , F. Aldinger
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摘要: Lead zirconate titanate powders are derived from a novel aqueous-based citrate-nitrate/oxynitrate sol-gel combustion process. Aqueous solutions of metal nitrates or oxynitrates transformed into gels with citric acid under heating. The received undergo self-propagating reaction on heating to 180 °C and subsequently yield voluminous ashes. These ashes form single phase perovskite Pb(Zr0.53Ti0.47)O3 powder specific surface area 8 m2/g upon calcination at 550 °C. show homogeneous distribution lead, zirconium, titanium ions which guarantees short diffusion paths in solid state formation PZT perovskite. redox behavior the was studied help DTA experiments. Powders characterized terms XRD, SEM, EDX analysis.
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