Effect of Heating Rate on Electromechanical Properties ofPNN–PZT Solid Solution
Keywords: PNN-PZT, piezoelectric properties, dielectric properties piezoelectric ceramic materials, ceramic actuator material, electronic materials, perovskite
AbstractLead nickel niobate–lead zirconate titanate (Pb(Ni1/3Nb2/3)0.5 –Pb(Zr0.15Ti0.35O3), (PNN-PZT))solid solution was synthesised by columbite process. Samples sintered at various heating ratesfor 4 h holding and their effect on electromechanical properties have been studied. When heatingrate was 8 °C/min from room temperature to 900 °C and holding for 4 h at 1280 °C, highest relativepermittivity and piezoelectric charge constant were observed, whereas heating rate of 3.5° C/min and holding for 4 h at 1280 °C have shown inferior electromechanical properties and graincoarsening. The piezoelectric charge constant (d33) ~612 pC/N and dielectric constant (e)~ 5950observed in fast heating rate specimen as against to d33~ 137 pC/N and e~4294. XRD result showsthe formation of pyrochlore-free perovskite phase. Fine grains were observed for fast heatingrate specimens.
How to Cite
Singh, V., Kumar, H., Kharat, D., & Kulkarni, M. (2007). Effect of Heating Rate on Electromechanical Properties ofPNN–PZT Solid Solution. Defence Science Journal, 57(1), 51-54. https://doi.org/10.14429/dsj.57.1729
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