Enhanced dielectric properties of PVDF-based composite film with BaTiO3@SrTiO3 nanoparticles

Abstract

A new ceramic/polymer composite based on BaTiO₃@SrTiO₃ (BT@ST) nanoparticles and polyvinylidene fluoride (PVDF) has been prepared and it has been proved by XRD, SEM, and TEM techniques that the BaTiO₃@SrTiO₃ nanoparticles are dispersed in the polymer matrix. Further, the effects of the inorganic filler contents of BT@ST nanoparticles on the dielectric behavior and the thermal and physical properties of this composite are discussed. The results showed that the BT@ST/PVDF composite film exhibited a relatively high dielectric constant (ε), low loss tangent (tan δ), and good temperature stability. At the same time, the physical and thermal properties of the BT@ST/PVDF composite film remained stable, and this composite can be applied in future electronic device related fields.