Lowering of the Magnetic Freedericksz Transition Threshold in Nematic Liquid Crystals Doped with Ferromagnetic Nanoparticles

被引：9

作者：

Hakobyan, M. R. ^{[1
]}

Hakobyan, R. S. ^{[1
]}

机构：

[1] Yerevan State Univ, Yerevan 375049, Armenia

来源：

JOURNAL OF CONTEMPORARY PHYSICS-ARMENIAN ACADEMY OF SCIENCES | 2011年 / 46卷 / 03期

关键词：

nematic liquid crystal; ferromagnetic nanocrystals; magnetic Freedericksz transition; threshold;

D O I：

10.3103/S1068337211030054

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that magnetic colloids could increase the coupling of a liquid crystal to a week magnetic field. Magnetic Freedericksz transition in a planarly oriented nematic liquid crystal doped with spherical ferromagnetic nanoparticles is considered theoretically. It is shown that even spherical nanoparticles could decrease a threshold of this transition because they strongly increase the magnetic field in the medium. This phenomenon indicates the possibility to use the considered system in magneto-optical displays.

引用

页码：116 / 118

页数：3

共 8 条

[1] Lyotropic ferronematics: Magnetic orientational transition in the discotic phase [J].