Optical Transmission Factor of a Ferronematic Liquid Crystal Under Magnetic Field Induced Orientational Transitions

In the framework of continuum theory we study the light transmission factor of a ferronematic liquid crystal as a function of external magnetic field, the anchoring energy with the boundary of a layer, and material parameters of a ferronematic. We show that magnetic field induced Fréedericksz transi...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2012-02, Vol.553 (1), p.220-232
Main Authors: Zakhlevnykh, A. N., Semenova, O. R.
Format: Article
Language:English
Subjects:
Anchoring
Boundary layer
Continuums
Crystals
Ferronematic
Freedericksz transitions
Geometry
Light transmission
Liquid crystals
Magnetic fields
magnetic suspension
optical transmission
orientational transitions
Phase transformations
Phase transitions
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Summary:In the framework of continuum theory we study the light transmission factor of a ferronematic liquid crystal as a function of external magnetic field, the anchoring energy with the boundary of a layer, and material parameters of a ferronematic. We show that magnetic field induced Fréedericksz transition in ferronematics in twist geometry can be either a first- or second-order phase transition depending on the anchoring energy between the director and magnetic particles, i.e., it exhibits the tricritical behavior. The light transmission factor for first- or second-order transition is also studied.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2011.609474