Ceramic-polymer nanocomposites with increased dielectric permittivity and low dielectric loss

The use of lead free materials in device fabrication is very essential from environmental point of view. We have synthesized the lead free ferroelectric polymer nanocomposite films with increased dielectric properties. Lead free bismuth titanate has been used as active ceramic nanofillers having cry...

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Bibliographic Details
Main Authors: Bhardwaj Sumit, Joginder, Paul, Raina, K K, Thakur, N S, Kumar, Ravi
Format: Conference Proceeding
Language:English
Subjects:
Beta phase
BISMUTH
Bismuth titanate
CERAMICS
Chemical synthesis
COMPOSITE MATERIALS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Crystallites
Dielectric loss
Dielectric properties
Diffraction patterns
ENERGY DENSITY
FABRICATION
FERROELECTRIC MATERIALS
Ferroelectricity
Flux density
FREQUENCY DEPENDENCE
Lead content
Lead free
Nanocomposites
NANOSCIENCE AND NANOTECHNOLOGY
NANOSTRUCTURES
ORGANIC FLUORINE COMPOUNDS
PERMITTIVITY
Polymer films
Polymer matrix composites
Polymers
POLYVINYLS
TITANATES
X-RAY DIFFRACTION
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Summary:The use of lead free materials in device fabrication is very essential from environmental point of view. We have synthesized the lead free ferroelectric polymer nanocomposite films with increased dielectric properties. Lead free bismuth titanate has been used as active ceramic nanofillers having crystallite size 24nm and PVDF as the polymer matrix. Ferroelectric β-phase of the polymer composite films was confirmed by X-ray diffraction pattern. Mapping data confirms the homogeneous dispersion of ceramic particles into the polymer matrix. Frequency dependent dielectric constant increases up to 43.4 at 100Hz, whereas dielectric loss decreases with 7 wt% bismuth titanate loading. This high dielectric constant lead free ferroelectric polymer films can be used for energy density applications.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4872592