A great deal of effort has been recently devoted to the study of dielectric
relaxation processes in ferroelectric nematic liquid crystals, yet their
interpretation remains unclear. In this work, we present the results of
broadband dielectric spectroscopy experiments of a prototypical ferroelectric
nematogen in the frequency range 10 Hz-110 MHz at different electrode
separations and under the application of DC bias fields. The results evidence a
complex behavior in all phases due to the magnitude of polar correlations in
these systems. The observed modes have been assigned to different relaxation
mechanisms based on existing theoretical frameworks.Comment: The following article has been submitted to The Journal of Chemical
Physics. After it is published, it will be found at
https://pubs.aip.org/aip/jc