Dielectric spectroscopy of liquid crystal doped with Fe3O4 nanoparticles

被引：12

作者：

Kopcansky, Peter ^{[1
]}

Koval'chuk, Alexander ^{[2
]}

Gornitska, Olga ^{[3
]}

Vovk, Vladeslav ^{[2
]}

Koval'chuk, Tatjana ^{[4
]}

Tomasovicova, Natalia ^{[1
]}

Koneracka, Martina ^{[1
]}

Timko, Milan ^{[1
]}

Zavisova, Vlasta ^{[1
]}

Jadzyn, Jan ^{[5
]}

Eber, Nandor ^{[6
]}

Studenyak, Igor ^{[7
]}

机构：

[1] Slovak Acad Sci, Inst Expt Phys, Watsonova 47, Kosice 04001, Slovakia

[2] Natl Acad Sci, Inst Phys, Kiev 03028, Ukraine

[3] Natl Aviat Univ, Inst Innovat Technol, Kiev 03058, Ukraine

[4] Natl Acad Sci, V Lashkaryov Inst Semicond Phys, Kiev 03028, Ukraine

[5] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland

[6] Hungarian Acad Sci, Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary

[7] Uzhgorod Natl Univ, Uzhgorod 88000, Ukraine

来源：

12TH INTERNATIONAL CONFERENCE ON MAGNETIC FLUIDS ICMF12 | 2010年 / 9卷

关键词：

liquid crystal; magnetic nanoparticles; ferronematics; dielectric spectroscopy;

D O I：

10.1016/j.phpro.2010.11.010

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The influence of Fe3O4 nanoparticles on dielectric properties of planar oriented liquid crystal were studied at the frequency range10-(1) - 10(6) Hz and in temperature interval of 292 - 345 K. It was shown that the dielectric spectrum of doped liquid crystal can be divided into two areas. Parameters obtained from the dielectric spectrum for frequencies lower than 10 Hz characterize near electrode processes, and parameters obtained for frequencies more than 10 Hz characterize the bulk properties of the sample. The relaxation time and near-electrode area thickness have been estimated. It was experimentally shown that magnetic nanoparticles change the near-electrode area parameters. (C) 2010 Published by Elsevier Ltd

引用

页码：36 / 40

页数：5

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