Abstract
In this study, Pb(Zr0.52·Ti0.48)O3 nanopowders were synthesized via sol–gel process. Particle morphology, crystalline phases and thermal behavior were characterized by scanning electron microscopy, X-ray diffraction and simultaneous thermal analyzer, respectively. The X-ray diffraction pattern showed perovskite phase clearly. The non-isothermal activation energy for the perovskite crystallization in Pb(Zr0.52·Ti0.48)O3 gel powders was 224.91 kJ mol−1. Both growth morphology parameter (n) and crystallization mechanism index (m) are close to 3.0, indicating that the bulk nucleation is dominant in the perovskite PZT formation. To determine dielectric properties, the calcined Pb(Zr0.52·Ti0.48)O3 nanopowders were pressed using uniaxial press. It was found that the Pb(Zr0.52·Ti0.48)O3 disks, by sintering at 1,200 °C for 2 and 10 h, and at 1 kHz frequency, had 966 and 1,490 of the dielectric constant, respectively.
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Khajelakzay, M., Taheri-Nassaj, E. Crystallization kinetics and growth mechanism of Pb(Zr0.52·Ti0.48)O3 nanopowders. Appl. Phys. A 116, 179–183 (2014). https://doi.org/10.1007/s00339-014-8406-3
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DOI: https://doi.org/10.1007/s00339-014-8406-3