Structure and properties of (1 − x)Pb(Mg1/2W1/2)O3 − xPb(Zr0.5Ti0.5)O3 solid solution ceramics

Abstract

The widely used piezoelectric Pb(Zr 1−x Ti x )O 3 ceramics have been known to have Zr 4+ and Ti 4+ randomly distributed on the B-site lattice in the ABO 3 perovskite structure. In this study, we attempted to develop long range 1:1 B-site cation order by forming the solid solution of (1 − x)Pb(Mg 1/2 W 1/2 )O 3 − xPb(Zr 0.5 Ti 0.5 )O 3 (x ≥ 0.60). High temperature X-ray diffraction tests indicate that the cation order is embedded in the structural order. The solid solution ceramics appear to have a non-cubic paraelectric phase above their Curie temperatures. The competition between the antiferroelectric order in Pb(Mg 1/2 W 1/2 )O 3 and the ferroelectric order in Pb(Zr 0.5 Ti 0.5 )O 3 leads to the relaxor ferroelectric behavior in the solid solution. Since the temperature at dielectric maximum, T m , is significantly above room temperature, regular polarization versus electric field hysteresis loops are recorded in these compositions at room temperature. In addition, these ceramics show very good piezoelectric properties.Abstract The widely used piezoelectric Pb(Zr1-xTix)O3 ceramics have been known to have Zr 4+ and Ti 4+ randomly distributed on the B-site lattice in the ABO3 perovskite structure. In the present work, we attempted to develop long range 1:1 B-site cation order by forming the solid solution of (1- . High temperature x-ray diffraction tests indicate that the cation order is embedded in the structural order. The solid solution ceramics appear to have a non-cubic paraelectric phase above their Curie temperatures. The competition between the antiferroelectric order in Pb(Mg1/2W1/2)O3 and the ferroelectric order in Pb(Zr0.5Ti0.5)O3 leads to the relaxor ferroelectric behavior in the solid solution. Since the temperature at dielectric maximum, Tm, is significantly above room temperature, regular polarization vs. electric field hysteresis loops are recorded in these compositions at room temperature. In addition, these ceramics show very good piezoelectric properties.

The morphotropic phase boundary and electrical properties of (1 − x)Pb(Zn1/2W1/2)O3–xPb(Zr0.5Ti0.5)O3 ceramics

“…Furthermore, the x-ray diffraction data in the range of 15~20 for 2 (not shown in Fig. 2) did not display any diffraction intensity peak, suggesting the absence of long range cation order in these sintered ceramics [8].…”

“…The best piezoelectric properties are found in compositions close to the morphotropic phase boundary (MPB), roughly Pb(Zr0.5Ti0.5)O3 [1]. To further enhance their piezoelectric properties, other complex compounds have been incorporated into the Pb(Zr0.5Ti0.5)O3, such as Pb(Ni1/3Nb2/3)3 [5], Pb(Zn1/3Nb2/3)O3 [6], Pb(Mg1/3Nb2/3)O3 [7], and Pb(Mg1/2W1/2)O3 [8].…”

“…To the authors' knowledge, the complex perovskite Pb(Zn1/2W1/2)O3 has not been reported in literature to be incorporated into Pb(Zr1-yTiy)O3 for solid solutions. In addition to identifying the MPB and investigating the dielectric, piezoelectric and ferroelectric properties in the (1x)Pb(Zn1/2W1/2)O3-xPb(Zr0.5Ti0.5)O3 solid solution system, the present study aims to determine the solubility limit of Pb(Zn1/2W1/2)O3 in Pb(Zr0.5Ti0.5)O3 and to explore if long range cation order can be developed in Pb(Zr0.5Ti0.5)O3-based solid solution [8].…”

The morphotropic phase boundary in the (1 − x)PbZrO3–x[0.3Bi(Zn1/2Ti1/2)O3–0.7PbTiO3] perovskite solid solution

“…Pb(Zr1-xTix)O3-based perovskite ceramics with compositions near the morphotropic phase boundary (MPB) have been widely investigated due to their excellent piezoelectric performance [1][2][3][4]. Recently the application of Pb(Zr1-xTix)O3-based ceramics has been challenged for their relatively low Curie point (Tc) and the environmental concern on Pb [5,6].…”