Complementary studies of BaTiO3 nanoparticles suspended in a ferroelectric liquid-crystalline mixtureA. Mikułko1, 2, P. Arora1, A. Glushchenko3, A. Lapanik1 and W. Haase1
1 Institute of Physical Chemistry, TU Darmstadt - Petersenstr. 20, Darmstadt, Germany, EU
2 Institute of Physics, Jagiellonian University - Reymonta 4, Kraków, Poland, EU
3 University of Colorado at Colorado Springs - Colorado Springs, CO 80933, USA
received 7 May 2009; accepted in final form 15 July 2009; published July 2009
published online 18 August 2009
In scope of this paper, DSC, small-angle X-ray scattering (SAXS), electro-optic and dielectric studies have been done on BaTiO3 nanoparticles dispersed in a ferroelectric liquid-crystalline (FLC) matrix. Electro-optic studies showed slightly lower spontaneous polarization, faster response time and relatively higher coercive voltage for the nanocomposite as compared to the pure FLC mixture. Dielectric measurements revealed a lower relative dielectric permittivity for the nanocomposite. This paper addresses all the issues starting from the kind of nanoparticles and FLC materials used for the preparation of nanocomposites, the various measurements done and a detailed discussion on the observed results.
77.84.Nh - Liquids, emulsions, and suspensions; liquid crystals.
77.80.Fm - Switching phenomena.
77.22.-d - Dielectric properties of solids and liquids.
© EPLA 2009