Infrared and Structural Studies of Micro and Nano-crystalline Ta Doped Lead Zirconate Titanate Ceramics

Abstract

<p> In this paper, influence of additives on structural properties of Tantalum (<em>Ta</em>) doped PZT ceramics, prepared by solid-state oxide and mechanical activation (MA) routes, has been studied. The Fourier transformation infrared spectroscopy (FTIR) studies, are done to understand the structural interactions, confirmed that the wave number and bond energy decreases with the increase in Ta content accompanied by decrease in grain size. FTIR spectrum becomes broader in nanocrystalline Ta-PZT. The fraction of tetragonal phase decrease along with reduction in grain size as the <em>Ta </em>content increase. The remnant polarisation and coercive field also follows the similar trend on <em>Ta </em>doping. It is seen that infrared spectroscopy results corroborate the structure and ferroelectric properties of PZT materials.</p>