Abstract
In the present article, lanthanum substituted modified PZT (Pb,La)(Zr,Ti,Fe,Nb)O3, (Zr:Ti=60:40) PLZFNT bulk ceramics were prepared by solid state reaction technique. The concentration of La3+ was varied from 0 to 1mol%. X-ray diffraction (XRD) analyses of these samples suggest the formation of good quality and homogeneous single phase pervoskite compounds. Lattice parameters (a & c) were found to decrease with increase in La3+ concentration. The dielectric properties of PLZFNT were measured using LCR meter as a function of temperature and frequency. It was found that dielectric properties of the samples are highly dependent on the La3+ content. Room temperature dielectric constant was found to be increased, whereas the Curie temperature decreased with La3+ content.
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