The ferroelectric and dielectric properties of poly (vinylidenefluoride-trifluoroethylene) copolymer /Ag composite films
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Shanghai Institute of Technical Physics, Chinese Academy of Sciences,Shanghai Institute of Technical Physics, Chinese Academy of Sciences

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    Abstract:

    The poly(vinylidenefluoride-trifluoroethylene)/Ag composite films are derived by spin-coating and annealed at hydrogen atmosphere. Ag(111) phase labeled at the diffraction peak 2θ=38.1 is observed from X-ray diffraction (XRD) pattern, and it was also proved from scanning electron microscope (SEM) images. A blue shift was observed in the infrared transmission spectrum of the composite films, which suggests the interaction of dipole and silver nanoparticles. The ferroelectric polarization and dielectric constant of P(VDF-TrFE)/Ag composite thin films increase by 32.5% and 13.3%, respectively, compared with the pure polymer films under air annealing. The dielectric loss tangent of the P(VDF-TrFE)/Ag composite films is independent of Ag doping ratios, which violates the percolation theory.

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RUAN Ya-Fei, JIANG Lin, WANG Jian-Lu, SUN Jing-Lan, LIU Ai-Yun, MENG Xiang-Jian. The ferroelectric and dielectric properties of poly (vinylidenefluoride-trifluoroethylene) copolymer /Ag composite films[J]. Journal of Infrared and Millimeter Waves,2013,32(1):18~22

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History
  • Received:February 18,2012
  • Revised:March 09,2012
  • Adopted:March 13,2012
  • Online: March 25,2013
  • Published: