Low Temperature Synthesis of Pb(Zr_0.52Ti_0.48)O₃ Ceramic Powders by Chelating Agent Assisted Sol-Gel Process

Abstract:

The Perovskite Pb(Zr_0.52Ti_0.48)O₃ (PZT) ceramic powders were synthesized by sol-gel assisted process by using citric acid (CA), EDTA and Triethanolamine (TEA) as chelating agents. The phase evolution of the synthesized powders was investigated by powder X-ray diffraction (XRD) analysis. TEA assisted process yielded phase pure PZT powders at a relatively low temperature of 600 °C compared to CA and EDTA assisted process. Further, the phase purity of the powders were improved by sintering temperature of 800°C. Vibrational analysis of Metal-Oxygen bonding was carried out using Fourier transform infrared spectroscopic (FTIR) analysis. Showed a broad band in the spectrums between 500 cm^-1 to 700 cm^-1 attributed to the vibrations (Ti/Zr)O₆ and Ti/Zr-O from PbZrTiO₃. The morphology of the prepared powders was visualized using Scanning electron microscope. From the leakage current characteristics, EDTA assisted powder has higher leakage current densities compared to the CA and TEA assisted powders.

• Periodical: Advanced Materials Research (Volumes 488-489)
• Pages: 310-314
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.488-489.310
• Online since: March 2012
• Authors: P. Jegatheesan, M. Muneeswaran, Raj S. Gokul, N.V. Giridharan
• Keywords: Ceramic, Morphotrophic Phase Boundary, PZT, Sol-Gel (SG)

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