Abstract
To combine good dielectric properties and flexibility in high dielectric constant composite materials, the Ba(Fe0.5Nb0.5)O3 (BFN) particles with giant dielectric constant were dispersed in poly(vinylidene fluoride) (PVDF) polymer matrix. The Ba(Fe0.5Nb0.5)O3 powders were prepared via the conventional solid-state reaction route. The Ba(Fe0.5Nb0.5)O3/poly(vinylidene fluoride) composites were obtained by a physical mixing and a cold press technique. The structure, morphology and dielectric properties have been characterized and discussed in detail. The dielectric constants of the composites increase with the volume fractions of the BFN filler increasing from 20% up to 60% at all frequency (100Hz–1MHz). The BFN/PVDF composite with 60vol% BFN shows the highest dielectric constant (ε′ ~57) at 100Hz at room temperature. The value of dielectric constant of the BFN/PVDF with composite 60vol% BFN is nearly six times as high as that of pure PVDF, which can be attributed to the interfacial polarization between the BFN and PVDF polymer matrix. It is believed that the Ba(Fe0.5Nb0.5)O3/poly(vinylidene fluoride) composites with high dielectric constant would be applied in the embedded capacitor field.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.