Authors
Abstract
The compound of piezoelectric nanopowders with a general system PbZxrTi1-xO3
(PZT) at different concentrations (x =0.3, 0.5 and 0.7) were prepared by using
organic acid precursor method. Disc shaped samples of each concentrations were
sintered for two hours at temperatures in the range of (700-1100ºC). The perovskite
structure was determined by X-ray diffraction spectroscopy, and the dielectric
properties were investigated for all samples. The dielectric studies of the
compounds as function of temperature in the range (room temperature to 450ºC) at
frequency 1 KHz shows that the compounds undergo a phase transition of diffuse
type from tetragonal phase to cubic phase. Maximum values of electrical properties
such as (Dielectric constant 1200, loss factor 1.05) were found for PZ0.5 T0.5
compounds, and these properties decrease with increasing of (Zr or Ti) additives.
The effect of frequency in range (103-105 Hz) on electrical properties is low with
stability in dielectric constant and dielectric loss.
Keywords
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