Journal of Materials Science and Engineering with Advanced Technology
FERROELECTRIC CERAMICAuthor's: A. Neqali, E. Choukri, A. Belboukhari, Z. Abkhar, Y. Gagou, L. Hajji, M. El Marssi, A. Najmeddine and D. Mezzane
Pages: [47] - [68]
Received Date: October 8, 2016
Submitted by:
DOI: http://dx.doi.org/10.18642/jmseat_7100121730
In this work, we study the sample 
prepared using conventional solid state
synthesis under air. X-ray analysis shows that it is a single-phase
TTB structure. Impedance spectroscopy analysis of the dielectric
properties of ceramics were investigated in the
frequency range, 10Hz-1MHz and in the temperature region from ambient
temperature to 350°C. Impedance and conductivity plots were used to
analyze the sample behaviour versus frequency. Cole–Cole plots
showed non-Debye relaxation. The nature of variation of the electrical
conductivity, and the activation energy value for different
temperature ranges, indicate that the conduction process is of
mixed-type (i.e., ionic polaronic and space charge generated from the
oxygen ion vacancies). Analysis results of dielectric properties will
be compared to three compounds of TTB structure that are derived from
SKN compound family: 
(PKN) in which the Pb is substituted by
(KLN) in which the Li is substituted by
Sr, and 
(PKGN) in which the Pb and Gd are
substituted by Sr.
TTB, ferroelectrics, dielectric, impedance, conductivity.
