Influence of molecular structure features on the size of spontaneous polarization induced by chiral addings in smectic matrixes

An investigation of influence of molecular structure features and components concentration on spontaneous polarization size in liquid crystal systems of smectic matrixes with chiral addings is carried out. It is shown, that in process of ferroelectric phase transition in investigated systems the role of short-acting intermolecular forces is essential. It is established, that at the certain concentration of chiral addings induced by them in smectic matrixes spontaneous polarization size has a maximum, and at the certain concentration of adding the chiral tilted smectic phase in investigated systems passes in smectic A phase. It is established also the occurrence of large size of spontaneous polarization in binary systems, which molecular structure of chiral adding is not satisfy to obligatory conditions, imposed by theory on molecular structure of chiral smectics for occurrence of spotananeous polarization. A dimer model of increase of spontaneous polarization size in smectic layeres of investigated systems is offered.

Keywords:

• Ferroelectric Liquid Crystals
• Molecular Structure Features

Notes

K.K. Vardanyan I Massive, Yerevan, Armenia