Analysis of the Order Parameters (Spontaneous Polarization and the Tilt Angle) and the Critical Field Close to the Smectic A–Smectic C* Transition in HDOBAMBC

Yurtseven, H.; Eren, D.; Abdelal, Aysegul

doi:10.1080/00150193.2014.932588

Cited by 2 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under the electric field applied, in particular, the Sm A-Sm C (C * ) transition of a first order has also been studied previously as reported in the literature [1][2][3][4][5][6][7][8][9][10][11]. Recently, ferroelectricity in liquid crystals with the experimental studies has been reviewed [12] and more recent studies in liquid crystal research in general have been given [13] in the literature.…”

Section: Introductionmentioning

confidence: 99%

Calculation of the tilt angle and susceptibility as functions of temperature and the electric field close to the Sm A – Sm C* transition in C7

2018

Self Cite

View full text Add to dashboard Cite

Smectic A-Smectic C * transition in the ferroelectric liquid crystal (C7) is studied as functions of the electric field and the temperature. By expanding the free energy in terms of the tilt angle ϴ (smectic C * phase) and the polarization P with a linear coupling between ϴ and P (Pϴ) in the mean field theory, the tilt angle is calculated as a function of the electric field (ϴ vs. E) at constant temperatures with respect to the transition temperature for C7 using the observed data from the literature. Also, by extracting the tilt angle from the observed electric displacements at various temperatures (at constant field strength), the inverse tilt angle susceptibility (χ ఏ ିଵ ) derived from the free energy, is fitted to the observed data for the dielectric constant and the fitted parameters are determined. Our calculated ϴ and χ ఏ show that the mean field theory explains adequately the observed behavior of the Smectic A-Smectic C * transition in the liquid crystals C7.

show abstract