Dielectric properties and dielectric aging of 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3 doped with CaO

The relaxor ferroelectric, 0.9Pb(Mg1/3,Nb2/3)O3-0.1PbTiO3 (0.9PMN-0.1PT) doped with different concentrations of CaO, was studied. Doping with CaO can increase the grain size. The maximum value of dielectric constant decreased and the degree of diffuse phase transition (DPT) was enhanced with CaO dop...

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Bibliographic Details
Published inMaterials letters Vol. 57; no. 19; pp. 2834 - 2839
Main Authors Yao, Wenlong, Feng, Chude, Li, Huidong, Yang, Yi, Yu, Youhua
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier 01.06.2003
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectric properties of solids and liquids
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Exact sciences and technology
Permittivity (dielectric function)
Physics
Grain size
Calcium additions
Impurity density
Phase transformations
Lead titanates
Doping
Perovskites
Relaxor
Dielectrics
Experimental study
CaO doping
Defects
Impurities
Ferroelectric materials
Dissipation
Impurity site
Aging
Magnesium Niobates
0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3
Lead Niobates
Permittivity
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Summary:The relaxor ferroelectric, 0.9Pb(Mg1/3,Nb2/3)O3-0.1PbTiO3 (0.9PMN-0.1PT) doped with different concentrations of CaO, was studied. Doping with CaO can increase the grain size. The maximum value of dielectric constant decreased and the degree of diffuse phase transition (DPT) was enhanced with CaO doping. Also, obvious ageing effects were found. Analysis shows that Ca2+ ions enter the lattice partly substituting the Nb5+ or Ti4+ ions at B-sites. 23 refs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0167-577X
1873-4979
DOI:10.1016/S0167-577X(02)01384-8