Ferronematics with soft particle anchoring in magnetic and laser fields

被引：12

作者：

Bena, RE ^{[1
]}

Petrescu, E ^{[1
]}

机构：

[1] Univ Politehn, Dept Phys, Bucharest 77206, Romania

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 248卷 / 02期

关键词：

ferronematics; nematics; optical Freedericksz transition; magnetic Freedericksz transition; laser fields;

D O I：

10.1016/S0304-8853(02)00362-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of a magnetic field and an optical laser field on the orientational behavior of a ferronematic with positive magnetic and dielectric anisotropy is investigated. A slow transition from the homeotropic to the distorted alignment of the nematic director is found when the field strengths exceed certain threshold values. A correlation between the threshold values of the two fields is obtained and a phase diagram for this transition is determined. It is also found that in the presence of the two fields the distorted arrangement is more stable than the homeotropic one (its free energy per unit area is smaller). (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：336 / 340

页数：5

共 12 条

[1] THEORY OF MAGNETIC SUSPENSIONS IN LIQUID CRYSTALS [J].