Kilit, EmelYurtseven, Hamit2025-05-102025-05-1020110015-01931563-511210.1080/00150193.2011.5940072-s2.0-84855770533https://doi.org/10.1080/00150193.2011.594007https://hdl.handle.net/20.500.14720/11649Yurtseven, Hasan Hamit/0000-0002-7745-6490The static dielectric constant epsilon(perpendicular to) of the ferroelectric liquid crystal 4-(3-methyl-2-chlorobutanoyloxy)-4'--heptyloxybiphenyl (A7) with high spontaneous polarization is calculated as a function of temperature using a mean field model. This calculation is performed close to the smectic A-isotropic liquid (SmA-I) transition for pure optically active compound (T-c = 81.6 degrees C). For this calculation of epsilon(perpendicular to), the free energy of the SmA phase is expanded in terms of the orientational order parameter. and spontaneous polarization P with P-2 psi(2). It is shown here that our model describes adequately the observed behaviour of the temperature dependence of epsilon(perpendicular to) close to the SmA-I transition for A7.eninfo:eu-repo/semantics/closedAccessDielectric ConstantFerroelectric Liquid CrystalA7Conference Object420Q4Q45661WOS:000298542700011