Effect of Spherical, Rod-Like and Chain-Like Magnetic Nanoparticles on Magneto-Optical Response of Nematics

Abstract

The effect of magnetic nanoparticles of low concentrations and different shapes, including spherical, rodlike, and chain-like shape on the magneto-optical response of nematic liquid crystal 6CHBT is investigated. The magneto-optical effect was examined using a linearly polarized laser beam (532 nm) passed through liquid crystal cell under both linearly increasing and pulsed magnetic fields. The analysis of observed magneto-optical characteristics and magneto-optical time responses confirmed the role of both concentration and shape of magnetic particles on the resultant magneto-optical behavior concerning both its stability and switching time.