Structure and properties of (1-x)Pb(Mg1/2W1/2)O-3-xPb(Zr0.5Ti0.5)O-3 solid solution ceramics

TitleStructure and properties of (1-x)Pb(Mg1/2W1/2)O-3-xPb(Zr0.5Ti0.5)O-3 solid solution ceramics
Publication TypeJournal Article
Year of Publication2008
AuthorsWhite D, Zhao X, Besser MF, Tan X
Journal TitleJournal of Materials Science
Volume43
Pages5258-5264
Date PublishedAug
Type of ArticleArticle
ISBN Number0022-2461
Accession NumberISI:000257751000027
Keywordscrystal-structure, DIELECTRIC-PROPERTIES, FERROELECTRICS, order, PB(MG1/2W1/2)O3, PEROVSKITE PB2MGWO6, phase-transition, RELAXORS
Abstract

The widely used piezoelectric Pb(Zr1-x Ti (x) )O-3 ceramics have been known to have Zr4+ and Ti4+ 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(Mg1/2W1/2)O-3 - xPb(Zr0.5Ti0.5)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(Mg1/2W1/2)O-3 and the ferroelectric order in Pb(Zr0.5Ti0.5)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.

DOI10.1007/s10853-008-2772-1
Alternate JournalJ. Mater. Sci.