Abstract
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.
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