The structural transitions in 6CHBT-based ferronematic droplets

In this work we describe the observations of structural transitions in ferronematics based on the thermotropic nematics 6CHBT (4-trans-4'-n-hexyl-cyclohexyl-isothiocyanato-benzene). The ferronematic droplets were observed in solutions of nematogenic 6CHBT dissolved in phenyl isocyanate and dope...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2008-05, Vol.20 (20), p.204123-204123 (5)
Main Authors: Tomašovičová, N, Kopčanský, P, Koneracká, M, Tomčo, L, Závišová, V, Timko, M, Éber, N, Fodor-Csorba, K, Tóth-Katona, T, Vajda, A, Jadzyn, J
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic liquids
Magnetic properties and materials
Physics
Small particles and nanoscale materials
Studies of specific magnetic materials
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Summary:In this work we describe the observations of structural transitions in ferronematics based on the thermotropic nematics 6CHBT (4-trans-4'-n-hexyl-cyclohexyl-isothiocyanato-benzene). The ferronematic droplets were observed in solutions of nematogenic 6CHBT dissolved in phenyl isocyanate and doped with fine magnetic particles. The phase diagram of the transitions from the isotropic phase to the nematic phase via a droplet state was found. Magneto-dielectric measurements of various structural transitions in this new system enabled us to estimate the type of anchoring of the nematic molecules on the magnetic particle surfaces in the droplets.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/20/20/204123