Abdul karim Ziedan Khalf Al- Jebory; Sabah M. Ali Ridha
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 usingorganic acid precursor method. ...
Read More ...
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 usingorganic acid precursor method. Disc shaped samples of each concentrations weresintered for two hours at temperatures in the range of (700-1100ºC). The perovskitestructure was determined by X-ray diffraction spectroscopy, and the dielectricproperties were investigated for all samples. The dielectric studies of thecompounds as function of temperature in the range (room temperature to 450ºC) atfrequency 1 KHz shows that the compounds undergo a phase transition of diffusetype from tetragonal phase to cubic phase. Maximum values of electrical propertiessuch as (Dielectric constant 1200, loss factor 1.05) were found for PZ0.5 T0.5compounds, 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 withstability in dielectric constant and dielectric loss.
