Ferroelectric nanocomposite with high dielectric constants

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4 Citations (Scopus)


Composites between ferroelectric material and a dispersed metal phase are of great interest due to the improvement in dielectric properties for such applications as high capacitance capacitors, non-volatile memory, ect. Using a colloidal method, Pt particles with a size of 3–5 nm were dispersed homogeneously in a PZT (PbZr0.53Ti0.43O3) matrix. No unwanted reaction phase between PZT and Pt during sintering at 1150 °C could be detected by X-ray diffraction. Electrical properties were investigated by impedance spectroscopy measurement. The effective dielectric constant increased remarkably as a power function of Pt volume content and can be described by the percolation theory. At 25 vol.% of Pt the dielectric constant of the composite is 4 times larger than that of pure PZT. The temperature dependence of the electrical properties is also influenced by the metallic phase fraction.
Original languageEnglish
Title of host publicationSolid-State Chemistry of Inorganic Materials IV
Subtitle of host publicationsymposium held December 2-6, 2002, Boston, Massachusetts, U.S.A.
EditorsM.A. Alario-Franco, M. Greenblatt, G. Rohrer, M.S. Whittingham
Place of PublicationWarrendale, PA
PublisherMaterials Research Society
Number of pages6
ISBN (Print)9781558996922
Publication statusPublished - 2003
EventMRS Fall Meeting 2002 - Boston, United States
Duration: 2 Dec 20025 Dec 2002

Publication series

NameMaterials Research Society symposium proceedings
PublisherMaterials Research Society
ISSN (Print)0272-9172


ConferenceMRS Fall Meeting 2002
Country/TerritoryUnited States


  • METIS-215842


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