Pisma v Zhurnal Tekhnicheskoi Fiziki, 2025 Volume 51, Issue 24,Pages 8–12(Mi pjtf8703)
International Conference on Physics.SPb/2025
Dielectric properties of 2-methylbenzimidazolium perchlorate films Ñ$_8$Í$_8$N$_2$–HClO$_4$ in the crystalline, liquid crystalline, and ionic liquid phases
Abstract:
Films of 2-methylbenzimidazolium perchlorate (MBI $\cdot$ HÑlO$_4$) were grown on sapphire Al$_2$O$_3$ (0001) substrates. The frequency dependences of the capacitance and $\operatorname{tg}\delta$ 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 $\cdot$ HÑlO$_4$. 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.
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