Phase Diagram for the 0.4Pb(Ni_1/3,Nb_1/3)O₃–0.6Pb(Zr,Ti)O₃ Solid Solution in the Vicinity of a Morphotropic Phase Boundary

Abstract

A phase diagram based on dielectric-permittivity-versustemperature measurements and high-temperature X-ray diffractometry was proposed for 0.4Pb(Ni 1/3 ,Nb 1/3 )O 3 -xPbZrO 3 -(0.6−x)PbTiO 3 (0.2 ≤ x ≤ 0.32) relaxor-ferroelectric solid solution, and a morphotropic phase boundary that sharply bends toward zirconium-rich compositions was found. A spontaneous normal-to-relaxor ferroelectric transition was also observed when heating was performed for all the compositions tested near the morphotropic phase boundary. Additional considerations about previously published phase diagrams for Pb(Zn 1/3 ,Nb 2/3 )O 3 -PbTiO 3 and Pb(Mg 1/3 ,Nb 1/3 )O 3 -PbTiO 3 might lead to an extension of the presented diagram to these compositions.

TEM Observations on 0.65Pb(Zr0.42Ti0.58)O3‐0.35Pb(Ni0.33Nb0.67)O3 Ceramics with CuO Additive

“…Solid solutions between a ferroelectric Pb(Zr 1− x Ti x )O 3 (PZT) and a relaxor ferroelectric Pb(Ni 1/3 Nb 2/3 )O 3 (PNN), namely PZT–PNN ceramics, have attracted special attention due to their richness in phase transitions within a narrow temperature range, from room temperature to 300°C . PZT–PNN ceramics have been investigated for the possible application to piezoelectric multilayer actuators due to their high piezoelectric properties .…”

Determination of depolarization temperature of (Bi1/2Na1/2)TiO3-based lead-free piezoceramics

“…The maximum of the first derivative of permittivity, corresponding to the inflection point, was used to determine T d , similar to the determination of transitions in relaxor ferroelectrics as shown in Ref. 51. …”

Effect of Li0.12Na0.88NbO3 content on the electrical properties of Bi0.50Na0.50TiO3 lead-free piezoelectric ceramics

“…2(f), a peak of the dielectric loss is observed for all ceramics in this work. Usually, the depolarization temperature (T d ) could be determined by the temperature dependence of the dielectric loss in these BNT-based piezoelectric ceramics [28,29]. Therefore, these peaks for the temperature dependence of the dielectric loss can characterize the T d value in this work.…”