Dielectric strength(Δε), relaxation frequency(frg), Cole-Cole distribution parameter (h) and dc conductivity (σdc) for phason fluctuations in SmC phase and amplitudon fluctuations in SmA* phase have been determined for a 15μm thick planar oriented ferroelectric liquid crystal mixture FLC#252 of high spontaneous polarization and low pitch (z=0.3-0.5μm). From the dielectric strength and relaxation frequency of the Goldstone mode, phason rotational viscosity (γφ) and elastic constant (Kφ) have been calculated. Away from the transition temperature (TC*A*=51.4°C), phason relaxation frequencies and rotational viscosities obey the Arrhenius behaviour. The soft mode relaxation frequencies in SmA* phase (frs) do not follow the Arrhenius nature, whereas the soft mode rotational viscosities (γθ) obey it. For the soft mode in SmA* phase it is observed that dielectric strength (Δεs), dielectric loss (ε(max) and (r-1) (r is the ratio of the static dielectric constant ε(O) to the high frequency limiting dielectric constant ε(∝)) follow the Curie-Weiss law.
Phason and amplitudon relaxation processes of a low pitch and large spontaneous polarization ferroelectric liquid crystal mixture
Reprints and Corporate Permissions
Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?
To request a reprint or corporate permissions for this article, please click on the relevant link below:
Academic Permissions
Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?
Obtain permissions instantly via Rightslink by clicking on the button below:
If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.
Related research
People also read lists articles that other readers of this article have read.
Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.
Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.