The effect of spherical magnetic particles (Fe3O4) on liquid crystals (6CHBT) behavior and structural changes in
electric and weak magnetic fields was studied by means of the attenuation of surface acoustic wave (SAW) of
frequency 30 MHz propagating along ferronematic liquid crystals. Three low volume concentrations
(Φ = 1 × 10−5, 1 × 10−4 and 1 × 10−3) of spherical magnetic particles were added to liquid crystal during its
isotropic phase. In contrast to undoped 6CHTB the distinctive SAW attenuation responses induced by both
electric and magnetic fields in studied ferronematic liquid crystals below Fréedericksz transition have been
observed suggesting both structural changes and the orientational coupling between magnetic moments of
magnetic particles and the director of the liquid crystal. The geometrical re-ranking of magnetic particles was
registered only for some orientations of magnetic field. Observed results confirmed the significant influence of
the presence of magnetic particles on the structural properties and following behavior of 6CHTB.