Properties of Nb doped Zr-rich PZT ceramics prepared by a heterogenous precipitation method
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A novel heterogenous precipitation method (H-P) combining the merits of solid state synthesis method (S-S-S) and the liquid routes was developed to synthesize the ZrO2 phase-free Zr-rich Pb0.99Nb0.02(Zr0.965Ti0.035)O3 ceramics. The microstructure of the ceramics synthesized by H-P was more homogeneous and fine than that by S-S-S. The density, the dissipation factor, the ferroelectric properties and the dielectric breakdown of the ceramics synthesized by H-P are more outstanding than that by S-S-S. The dielectric breakdown (Eb) increases markedly from 5 kV/mm to 6.5 kV/mm.
KeywordsDielectric Breakdown Solid State Synthesis Pb3O4 Dielectric Breakdown Strength Trigger Voltage
The authors thank for the support from the Great Fundamental Research Project of Science and Technology Commission of Shanghai Municipality (04DZ14002)