Journal
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
Volume 207, Issue 3, Pages 739-742Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssa.200925471
Keywords
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Funding
- NSF of China
- State Key Lab of EIPE [09201]
- Beijing Key Lab of PPMT [KF200801]
- Ministry of Sciences and Technology of China [2008AA03Z307]
- New Century Excellent Talents in University (NCET)
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The Ag@TiO2 core@shell nanoparticles filled ferroelectric poly(vinylidene fluoride) (PVDF)-based composites (0-3 connectivity) were prepared in order to study the effect of core@shell structure on dielectric permittivity in the Ag@TiO2/PVDF nanocomposites. The Ag@TiO2 core@shell nanoparticles were synthesized via a water-thermal meting route. Transmission electron microscope (TEM) images showed the nanoparticles were about 60-120 nm in diameter and the thickness of the shell layer was about 6-12 nm, which can be adjusted by changing the fabrication conditions. Results of dielectric measurements showed that the shell-layer thickness of the Ag@TiO2 core@shell nanoparticles played a key role in deciding the final values of the dielectric properties of the nanocomposites. The variation of dielectric properties of the nanocomposites with temperature also depends on the shell-layer thickness of the Ag@TiO2 core@shell nanoparticles. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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