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
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

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.

Alternate JournalJ. Mater. Sci.