High concentration ferronematics in low magnetic fields

T. Tóth-Katona, P. Salamon, N. Éber, N. Tomašovičová, Z. Mitróová, P. Kopčanský

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We investigated experimentally the magneto-optical and dielectric properties of magnetic-nanoparticle-doped nematic liquid crystals (ferronematics). Our studies focus on the effect of the very small orienting bias magnetic field Bbias, and that of the nematic director pretilt at the boundary surfaces in our systems sensitive to low magnetic fields. Based on the results we assert that Bbias is not necessarily required for a detectable response to low magnetic fields, and that the initial pretilt, as well as the aggregation of the nanoparticles play an important (though not yet explored enough) role.

Original languageEnglish
Pages (from-to)117-121
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume372
DOIs
Publication statusPublished - Dec 2014

Keywords

  • Ferronematic
  • Liquid crystal
  • Structural transition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Tóth-Katona, T., Salamon, P., Éber, N., Tomašovičová, N., Mitróová, Z., & Kopčanský, P. (2014). High concentration ferronematics in low magnetic fields. Journal of Magnetism and Magnetic Materials, 372, 117-121. https://doi.org/10.1016/j.jmmm.2014.07.061