# Anchoring energy and orientational elasticity of a ferroelectric liquid crystal

## Abstract

The dielectric susceptibility of a helix-free ferroelectric liquid crystal layer has been experimentally and theoretically studied as a function of the layer thickness. The investigation has been performed on the inner branch of the polarization hysteresis loop, in the region of a linear dependence of the polarization on the electric field. The experimental results are explained using the notion of effective layer thickness, which involves the characteristic distance {xi} over which the orienting effect of interfaces is operative. Comparison of the experimental data and theoretical results made it possible to estimate this distance as {xi} = 41 {mu}m and evaluate the anchoring energy (W = 2.8 Multiplication-Sign 10{sup -3}-1.1 Multiplication-Sign 10{sup -2} J/m{sup 2}) and the intralayer elastic constant (K Double-Prime Almost-Equal-To 1 Multiplication-Sign 10{sup -8}-3 Multiplication-Sign 10{sup -7} N).

- Authors:

- Russian Academy of Sciences, Nesmeyanov Institute of Organoelement Compounds (Russian Federation)
- Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)

- Publication Date:

- OSTI Identifier:
- 22069443

- Resource Type:
- Journal Article

- Journal Name:
- Journal of Experimental and Theoretical Physics

- Additional Journal Information:
- Journal Volume: 114; Journal Issue: 6; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7761

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; COMPARATIVE EVALUATIONS; ELASTICITY; ELECTRIC FIELDS; FERROELECTRIC MATERIALS; HYSTERESIS; INTERFACES; LAYERS; LIQUID CRYSTALS; PERMITTIVITY; POLARIZATION; THICKNESS; YOUNG MODULUS

### Citation Formats

```
Kaznacheev, A. V., E-mail: kazna@ineos.ac.ru, and Pozhidaev, E. P., E-mail: epozhidaev@mail.ru.
```*Anchoring energy and orientational elasticity of a ferroelectric liquid crystal*. United States: N. p., 2012.
Web. doi:10.1134/S1063776112040097.

```
Kaznacheev, A. V., E-mail: kazna@ineos.ac.ru, & Pozhidaev, E. P., E-mail: epozhidaev@mail.ru.
```*Anchoring energy and orientational elasticity of a ferroelectric liquid crystal*. United States. doi:10.1134/S1063776112040097.

```
Kaznacheev, A. V., E-mail: kazna@ineos.ac.ru, and Pozhidaev, E. P., E-mail: epozhidaev@mail.ru. Fri .
"Anchoring energy and orientational elasticity of a ferroelectric liquid crystal". United States. doi:10.1134/S1063776112040097.
```

```
@article{osti_22069443,
```

title = {Anchoring energy and orientational elasticity of a ferroelectric liquid crystal},

author = {Kaznacheev, A. V., E-mail: kazna@ineos.ac.ru and Pozhidaev, E. P., E-mail: epozhidaev@mail.ru},

abstractNote = {The dielectric susceptibility of a helix-free ferroelectric liquid crystal layer has been experimentally and theoretically studied as a function of the layer thickness. The investigation has been performed on the inner branch of the polarization hysteresis loop, in the region of a linear dependence of the polarization on the electric field. The experimental results are explained using the notion of effective layer thickness, which involves the characteristic distance {xi} over which the orienting effect of interfaces is operative. Comparison of the experimental data and theoretical results made it possible to estimate this distance as {xi} = 41 {mu}m and evaluate the anchoring energy (W = 2.8 Multiplication-Sign 10{sup -3}-1.1 Multiplication-Sign 10{sup -2} J/m{sup 2}) and the intralayer elastic constant (K Double-Prime Almost-Equal-To 1 Multiplication-Sign 10{sup -8}-3 Multiplication-Sign 10{sup -7} N).},

doi = {10.1134/S1063776112040097},

journal = {Journal of Experimental and Theoretical Physics},

issn = {1063-7761},

number = 6,

volume = 114,

place = {United States},

year = {2012},

month = {6}

}