Abstract

Polycrystalline samples of lanthanum doped lead zirconate titanate (PLZT) with formula (Pb1−x Lax) (Zr0.65 Ti0.35)1−0.25XO3, (x = 0.02, 0.04, 0.06. 0.08 and 0.1) have been prepared by a high temperature solid state reaction technique. The optimum sintering temperature was found to be 950°C for 12 h. The structural phase, density and microstructure of all the samples prepared have been investigated using X-ray diffraction and scanning electron microscopic (SEM) studies. The X-ray diffraction analysis suggest the formation of single phase compounds with rhombohedral phase for x = 0.02, 0.04 and 0.06 with the space group (R3m). For x = 0.08 and 0. 1 the samples showed cubic phase (Pm3m). The notable feature of these microstructural studies showed that the samples sintered at 950°C for 12 h. possess a fairly uniform grain distribution without the presence of any cracks. The phase evolutions on rhombohedral - Cubic have been analyzed by using deconvolution of peaks.

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