Temperature dependence of the conductance and capacitance of Langmuir films of liquid crystals

Langmuir films of various thicknesses, fabricated based on liquid crystals, have been studied. Previously, a structural phase transition at a temperature of $\sim$75$^\circ$C was detected for these films. To determine the nature of this transition, the temperature dependences of the capacitance and conductance of the metal-Langmuir film-metal structures have been measured. The results obtained suggest that the ferroelectric phase in the studied samples exists beginning with one monolayer. The length of the temperature interval in which the phase transition is observed indicates a film structure imperfection.