Magnetically induced shift of the isotropic-nematic phase transition temperature in a mixture of bent-core and calamitic liquid crystals doped with magnetic particles

摘要

We have investigated the influence of doping with spherical magnetic nanoparticles on the mixture of a bent-core and a calamitic liquid crystal. Results showed a reduction of the critical field of the magnetic Freedericksz transition by more than a factor of two after the doping. Moreover, we give for the first time experimental evidence of the theoretically predicted magnetically induced negative shift of the isotropic to nematic phase transition temperature.