Publication Details:

Established in 2008

Journal or Publication Title:

Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես

Date of publication:

2022

Volume:

15

Number:

2-3

ISSN:

1829-1171

Official URL:

Corporate Creators:

Institute of Applied Problems of Physics of NAS RA

Coverage:

28-34

Abstract:

The occurrence of the large value of spontaneous polarization is established in LC system whose composition`s molecular structure does not satisfy the obligatory conditions for the occurrence of spontaneous polarization that are imposed by theory on a molecular structure. The essential role of short range intermolecular forces in the process of ferroelectric phase transition in the studied LC systems is shown. It was found that for {CC}, {DD} and {AD} interactions the most beneficial molecules` packing in terms of energy is the antiparallel one . In the case of {AA} and {AC} interactions both parallel and are equally beneficial in terms of energy. The possibility of formation of molecular clusters–dimers is shown. It is concluded that these are stabilized, in particular, by dipole–dipole interaction of molecules. A dimer model for increasing the value of spontaneous polarization is proposed.

Format:

pdf

Identifier:

click here to follow the link ; oai:arar.sci.am:322722

General note:

Special Issue Selected Papers of the 7th International Conference on “Electron, Positron, Neutron and X-ray Scattering under External Influences” Yerevan – Meghri 2021

Location of original object:

ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան