Abstract
Lead zirconate titanate (PZT) powder of composition Pb(Zr0.65Ti0.35)O3 was modified by incorporation of 10% lanthanum as a supervalent cation by the process of evaporative decomposition of aqueous solutions of lead nitrate, lanthanum nitrate, zirconyl nitrate and tetra-isopropyl titanate. X-ray diffraction patterns and infrared spectra of the compound calcined at different temperatures indicate that formation of rhombohedral PLZT is possible at 550°C for 1 H. The room-temperature dielectric constant measured at 1 kHz was found to be 991. From the study of dielectric constant as a function of temperature,Tc was found to be at 85°C. SEM study of the compound has shown grain-size homogeneity and quality of the compound. All these results suggest that this PLZT powder may be suitable for device applications.
Published Version
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