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

页码：7890 / 7896

页数：7

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