The Structural Phase Transitions in 6CB-Based Ferronematics |
| N. Tomašovičová a, M. Koneracká a, P. Kopčanský a, M. Timko a, V. Závišová a, L. Tomčo b and J. Jadżyn c
a Institute of Experimental Physics, Slovak Academy of Sciences, Watsonová 47, 04001 Košice, Slovakia b Faculty of Aeronautics, Technical University, Rampová 7, 041 21 Košice, Slovakia c Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland |
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| The structural transitions in ferronematics based on the thermotropic nematic liquid crystal 4-cyano-4'- -hexylbiphenyl were studied. The ferronematic samples were prepared by doping with magnetic suspension consisting of Fe3O4 particles (10 nm in diameter) coated with oleic acid as a surfactant with different volume concentrations of magnetic particles (from 10-5 to 10-3). Freedericksz transitions were studied in combined electric and magnetic fields. The experimental results indicated soft anchoring with perpendicular initial orientation between the magnetic moment of the magnetic particles and director. |
| DOI: 10.12693/APhysPolA.115.336 PACS numbers: 75.50.Mm, 61.30.Gd, 61.30.Hn |