Description:
Abstract
Lead base relaxor ferroelectric materials have surged a favorable interest owing to
their remarkable in dielectric properties. Ferroelectric materials are sensitiveness with a
temperature and dielectric properties are known to decrease when the temperature is higher
than the temperature of maximum dielectric constant. The objective of this research is to
study the phase transition were investigated by XRD, microstructure by SEM, the chemical
bonds of samples were identified by FTIR and the temperature dependent dielectric
constants and loss tangents were investigated as functions of both temperature and
frequency of (1 – x)Pb(Zr0.52Ti0.48)O3-xPb(Fe1/2 Nb1/2)O3 when x = 0, 10, and 30 mol%. A
phase transition from morphotropic phase boundary (MPB) to tetragonal phase was
observed. Grain size of the samples was in range of 0.84–1.87 μm. The increased disorder
of Pb(Zr0.52Ti0.48)O3-xPb(Fe1/2 Nb1/2)O3 was also shown vibration frequency at 1,408 cm–1
and 1,631 cm–1 in FTIR according to the harmonic oscillator. The samples of x = 10 and 20
mol% showed broad‒diffuse of dielectric constant and dispersive phase transition
indicating ferroelectric nature. Meanwhile, piezoelectric properties were investigated on d33
and p k which PZT52/48-0.1PFN exhibited maximum values and declined with rising PFN
contents.