Balashova E. V.1, Krichevtsov B. B.1
1Ioffe Institute, St. Petersburg, Russia
Email: balashova@mail.ioffe.ru
Films of 2-methylbenzimidazolium perchlorate (MBI· HClO4) were grown on sapphire Al2O3 (0001) substrates. The frequency dependences of the capacitance and tgδ were studied in the obtained structures under a constant electric field. The studies were carried out in the crystalline phase, the ionic liquid crystal phase, and the ionic liquid phase of MBI·HClO4. In the ionic liquid and ionic liquid crystal phases, a strong effect of the electric field on the dielectric properties and conductivity was found, associated with a change in the parameters of double electric layers arising in the contact region with the electrode. The results of a study of the dielectric properties and conductivity of the structures using dielectric and impedance spectroscopy are presented Keywords: ionic liquid, ionic liquid crystal, dielectric properties, double electric layers, impedance spectroscopy.
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