Dielectric Studies in Spherical Silica Nanoparticles doped Ferroelectric Liquid Crystal Mixture

Abstract

in this paper, spherical silica nanoparticles were doped into a ferroelectric liquid crystal (FLC) material. Dielectric studies were carried out in the frequency range of 20Hz-1MHz. Temperature and frequency dependent dielectric permittivity were investigated in the undoped and doped samples. It was observed that adding a small amount of SNPs, the permittivity increases ~20% than pure FLC mixture. A Goldstone mode was observed in both pristine FLC and SNPs doped FLC samples. The relaxation frequency of detected mode was also observed at ~570 Hz and ~715 Hz for pristine FLC and doped samples respectively at 34�C. A single relaxation behaviour was also described in the form of Cole-Cole plot.