Sensitivity of 6CHBT Liquid Crystal Doped with Ferroelectric or Magnetic Particles to Electric and Magnetic Fields
J. Majorošováa, N. Tomašovičováa, M. Timkoa, M. Konerackáa, I.P. Studenyakb, O.V. Kovalchukc, S.O. Kovalchukd, J. Jadżyne, P. Kopčanskýa
aInstitute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
bUzhorod National University 46 Pidhirna St., Uzhorod 88000, Ukraine
cInstitute of Physics, National Academy of Science of Ukraine,46, prospect Nauky, 03028 Kyiv, Ukraine
dTaras Shevchenko National University of Kyiv 64, Volodymyrs'ka St., 01601 Kyiv, Ukraine
eInstitute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60179 Poznan, Poland
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Introduction of ferroelectric or magnetic nanoparticles into nematic liquid crystal is a promising method for the improvement of the electro-optic or magneto-optic properties of different nematic liquid crystals by non-chemical way. This work is devoted to the study of composite systems of liquid crystal with spherical ferroelectric or magnetic particles with the aim to study their sensitivity to electric and magnetic fields. The nematic 4-(trans-4'-n-hexylcyclohexyl)-isothiocyanatobenzene (6CHBT) liquid crystal was doped with SbSI ferroelectric particles or with Fe3O4 magnetic particles. The structural transitions in ferronematic samples were indicated by capacitance measurements in a capacitor made of ITO-coated glass electrodes in combined electric and magnetic fields. The obtained results showed the increase of the shift in critical voltage with increasing magnetic field in both kinds of samples.

DOI: 10.12693/APhysPolA.126.260
PACS numbers: 75.50.Mm, 61.30.Gd, 64.70.Md