Temperature Dependence of the Brillouin Frequency Shift and the Linewidth of the LA Mode in the Ferroelectric Phase of PZT-x (PbZr1-xTixO3)

YURTSEVEN H. H., Korkmaz C. S., KİRACI A.

Joint IEEE International Symposium on the Applications of Ferroelectric / International Symposium on Integrated Functionalities / Piezoelectric Force Microscopy Workshop (ISAF/ISIF/PFM), Singapore, Singapore, 24 - 27 May 2015, pp.1-4 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Singapore
  • Country: Singapore
  • Page Numbers: pp.1-4
  • Keywords: Ferroelectricity, Brillouin frequency, order parameter, damping constant (FWHM), PbZr1-xTixO3, DAMPING CONSTANT, RAMAN, RELAXATION, TRANSITION, BEHAVIOR
  • Middle East Technical University Affiliated: Yes

Abstract

The temperature dependence of the Brillouin frequency and the linewidth of the LA mode is studied for the concentration of x=0.45 in the ferroelectric phase of PbZr1-xTixO3 (PZT-x) within the temperature range of 443 to 656 K (T-C=657 K). Using the experimental data for the Brillouin frequency of the LA mode as an order parameter below T-C the temperature dependence of the linewidth (FWHM) is calculated by the pseudospin-phonon coupled model and the energy fluctuation model for the lead titanate zirconate (x=0.45). Additionally, the activation energies are compared from the damping constant (linewidth) using both models for the temperature range of 443 to 656 K in the ferroelectric phase of PbZr1-xTixO3.