Enhanced dielectric properties of poly(vinylidene fluoride) composites filled with nano iron oxide-deposited barium titanate hybrid particles

• DOI: 10.1038/srep33508
• Publication Date: 2016-09-16T10:51:13Z
• Authors: Changhai Zhang; Qingguo Chi; Jiufeng Dong; Yang Cui; Xuan Wang; Lizhu Liu; Qingquan Lei
• Keywords: Barium titanate; Dielectric loss

Abstract We report enhancement of the dielectric permittivity poly(vinylidene fluoride) (PVDF) generated by depositing magnetic iron oxide (Fe 3 O 4 ) nanoparticles on surface barium titanate (BT) to fabricate BT–Fe /PVDF composites. This process introduced an external field and influences properties composites were investigated systematically. The subjected treatment for 30 min at 60 °C exhibited largest (385 100 Hz) when concentration is approximately 33 vol.%. suppressed formation a conducting path in composite induced low loss (0.3) conductivity (4.12 × 10 −9 S/cm) composite. Series-parallel model suggested that enhanced should arise from ultrahigh hybrid particles. However, experimental results treated agree with percolation theory, which indicates originate interfacial polarization field. work provides simple effective way preparing nanocomposites use electronics industry.