Piezoelectric materials have been using widely for various applications like MEMS and energy harvesting. The PZT (PbZr0. 52Ti0.48O3) is one among of all piezoelectric materials, which exhibit vital role for fabrication of devices. The present manuscript is described about PZT powders, which were synthesized by solgel method and yielded powders were annealed at different temperature to get stabilize structure without any impurities phase with help of X-ray diffraction. As a part of structural investigation, Raman spectroscopy have done over the different temperature annealed powders and identify Raman active modes. The band gap energy was found for these nano powders that are increasing with respect to annealing temperature. The microstructure of nano PZT powders has found with help FESEM, which provided the particles size with order of 50-70 nm diameters. Electrical properties i.e., the P-E loop have done on nano PZT, polarization has increased and leakage current also increased for annealed temperatures. The terahertz spectra of PZT results suggested that the absorption coefficient peak found at higher frequency, refractive index peak found lower frequency for annealed PZT samples. The 600 oC is shown maximum dielectric constant & refractive index at 0.6 THz, which is confirmed by the electric properties of PZT. As annealing temperature increases, dielectric and refractive index decreased due to depolarization.
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