Abstract


Semiconductor Physics, Quantum Electronics & Optoelectronics. 2009. V. 12, N 3. P. 309-314. https://doi.org/10.15407/spqeo12.03.309 Dielectric properties of nematic liquid crystals with Fe₃O₄ nanoparticles in direct magnetic field O.P. Gornitska¹, A.V. Koval’chuk^1,2, T.N. Koval’chuk³, P. Kopčanský⁴, M. Timko⁴, V. Zavisova⁴, M. Koneracká⁴, N. Tomašovičová⁴, J. Jadzyn⁵, I.P. Studenyak⁶ ¹National Aviation University, Institute of Innovative Technologies 1, Cosmonaut Komarov str., 03058 Kyiv, Ukraine ²Institute of Physics, National Academy of Science of Ukraine, 46, prospect Nauky, 03028 Kyiv, Ukraine ³V. Lashkaryov Institute of Semiconductor Physics, National Academy of Science of Ukraine, 45, prospect Nauky, 03028 Kyiv, Ukraine ⁴Institute of Experimental Physics, Slovak Academy of Sciences, 47, Watsonova str., 04001 Kosice, Slovak Republic ⁵Institute of Molecular Physics, Polish Academy of Sciences, 16, Smoluchowskiego str., 60179 Poznan, Poland ⁶Uzhgorod National University, 46, Pidhirna str., 88000 Uzhgorod, Ukraine Abstract. Researched within the frequency range 10 -1 –10 6 Hz were dielectric properties of pure 6CHBT liquid crystals and 6CHBT ones with the impurity of Fe 3 O 4 nanoparticles that have the mean diameter 5 nm and weight concentration 10 -4 %. The study was performed without and under the influence of direct magnetic field with the induction 0.45 and 0.60 T. It has been shown that the magnetic field influences on the parameters of the near-electrode area of liquid crystal. In the case of liquid crystal with magnetic nanoparticles, the parameter changes caused by the magnetic field depend on the induction value. Keywords: dielectric properties of liquid crystals, magnetic impurities, orientation of liquid crystals. Full Text (PDF) Back to N3 Volume 12