Magnetic-field induced isotropic to nematic phase transition in ferronematics

Peter Kopčanský, Natália Tomašovičová, Martina Konerackǎ, Vlasta Závišová, Milan Timko, Michal Hnatič, Nǎndor Éber, T. Tóth-Katona, Jan Jadzyn, Juha Honkonen, Eric Beaugnon, Xavier Chaud

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

In this work the thermotropic liquid crystal 4-(trans-4′-n- hexylcyclohexyl)-isothiocyanato-benzene (6CHBT) was doped with differently shaped magnetic nanoparticles with the aim to increase the sensitivity of the liquid crystal on the external magnetic field. The volume concentration of the magnetic particles was 2× 10-4. The phase transition temperature from isotropic to nematic phase in external magnetic fields up to 12 T was monitored by precise capacitance measurements in capacitance cells filled with the prepared ferronematic samples. The shift in the temperature from isotropic to nematic phase was observed in the liquid crystal doped with rodlike particles. To our knowledge, this is the first observation of such a magnetic-field induced transition in ferronematics based on a calamitic liquid crystal.

Original languageEnglish
Article number6027785
Pages (from-to)4409-4412
Number of pages4
JournalIEEE Transactions on Magnetics
Volume47
Issue number10
DOIs
Publication statusPublished - Oct 2011

Fingerprint

Liquid Crystals
Liquid crystals
Phase transitions
Magnetic fields
Thermotropic liquid crystals
Capacitance measurement
Benzene
Superconducting transition temperature
Capacitance
Nanoparticles
Temperature

Keywords

  • Ferronematics
  • liquid crystals
  • magnetic nanoparticles
  • structural transitions

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Kopčanský, P., Tomašovičová, N., Konerackǎ, M., Závišová, V., Timko, M., Hnatič, M., ... Chaud, X. (2011). Magnetic-field induced isotropic to nematic phase transition in ferronematics. IEEE Transactions on Magnetics, 47(10), 4409-4412. [6027785]. https://doi.org/10.1109/TMAG.2011.2160618

Magnetic-field induced isotropic to nematic phase transition in ferronematics. / Kopčanský, Peter; Tomašovičová, Natália; Konerackǎ, Martina; Závišová, Vlasta; Timko, Milan; Hnatič, Michal; Éber, Nǎndor; Tóth-Katona, T.; Jadzyn, Jan; Honkonen, Juha; Beaugnon, Eric; Chaud, Xavier.

In: IEEE Transactions on Magnetics, Vol. 47, No. 10, 6027785, 10.2011, p. 4409-4412.

Research output: Contribution to journalArticle

Kopčanský, P, Tomašovičová, N, Konerackǎ, M, Závišová, V, Timko, M, Hnatič, M, Éber, N, Tóth-Katona, T, Jadzyn, J, Honkonen, J, Beaugnon, E & Chaud, X 2011, 'Magnetic-field induced isotropic to nematic phase transition in ferronematics', IEEE Transactions on Magnetics, vol. 47, no. 10, 6027785, pp. 4409-4412. https://doi.org/10.1109/TMAG.2011.2160618
Kopčanský P, Tomašovičová N, Konerackǎ M, Závišová V, Timko M, Hnatič M et al. Magnetic-field induced isotropic to nematic phase transition in ferronematics. IEEE Transactions on Magnetics. 2011 Oct;47(10):4409-4412. 6027785. https://doi.org/10.1109/TMAG.2011.2160618
Kopčanský, Peter ; Tomašovičová, Natália ; Konerackǎ, Martina ; Závišová, Vlasta ; Timko, Milan ; Hnatič, Michal ; Éber, Nǎndor ; Tóth-Katona, T. ; Jadzyn, Jan ; Honkonen, Juha ; Beaugnon, Eric ; Chaud, Xavier. / Magnetic-field induced isotropic to nematic phase transition in ferronematics. In: IEEE Transactions on Magnetics. 2011 ; Vol. 47, No. 10. pp. 4409-4412.
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