A nanocomposite was prepared by embedding Ba0.6Sr0.4TiO3 (BST)/silver core/shell nanoparticles (BST@Ag) into polyvinylidene-fluoride (PVDF). Through functionalizing the surface of BST nanoparticles by silver coating, the relative permittivity of composites was significantly increased to 153 at 100 Hz which is 73% higher than that of the composite making of untreated BST nanoparticals. The loss tangent was still low (less than 0.2) when the filler content of BST@Ag was 0.55. Increasing the conductivity of the interlayer between BST and PVDF by silver enhances the space charge polarization and forms a nanocapacitance network through the interparticle junctions connecting the electrodes of sample.
Published in:
Applied Physics Letters
(Volume:95
,
Issue:
20
)
Date of Publication:
Nov 2009
- Page(s):
-
202904
-
202904-3
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.3257371
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
01 December 2009
- Issue Date :
-
Nov 2009