Structuralization of magnetic nanoparticles in 5CB liquid crystals

被引：25
|
作者：
Gdovinova, Veronika [1 ]
Schroer, Martin A. [2 ]
Tomasovicova, Natalia [1 ]
Appel, Ingo [3 ,4 ]
Behrens, Silke [3 ,4 ]
Majorosova, Jozefina [1 ]
Kovac, Jozef [1 ]
Svergun, Dmitri I. [2 ]
Kopcansky, Peter [1 ]
机构：
[1] Slovak Acad Sci, Inst Expt Phys, Watsonova 47, Kosice 04001, Slovakia
[2] DESY, Hamburg Outstn, EMBL, Notkestr 85, D-22607 Hamburg, Germany
[3] KIT, Inst Katalyseforsch & Technol, Postfach 3640, D-76021 Karlsruhe, Germany
[4] Heidelberg Univ, Anorgan Chem Inst, Neuenheimer Feld 270, D-69120 Heidelberg, Germany
来源：
SOFT MATTER | 2017年 / 13卷 / 43期
关键词：
THERMAL FLUCTUATIONS; SUSPENSIONS; PARTICLE;
D O I：
10.1039/c7sm01234a
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This work is devoted to the study of highly stable composite systems of the liquid crystal 4-n-pentyl-4'-cyanobiphenyl (5CB) doped with CoFe2O4 magnetic nanoparticles. Ferronematic samples were prepared with two different weight concentrations: sample A 0.085 wt% and sample B 0.062 wt%. The interaction of CoFe2O4 nanoparticles with the liquid crystal was investigated by small-angle X-ray-scattering and magnetization measurements. The obtained results reveal aggregates formed by magnetic nanoparticles that are oriented in the nematic phase. Moreover, the prepared samples show unexpected behaviour of a sudden change in magnetization, which is unusual for such ferronematics.
引用
收藏
页码：7890 / 7896
页数：7
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