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Issue 1, 2013
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Mean-field description of the order–disorder phase transition in ferronematics

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Abstract

A mean-field theory is developed describing in what way a small amount of ferromagnetic nanoparticles embedded in a nematic liquid-crystalline matrix affects the order parameters and the temperature of the nematic–isotropic phase transition. In such a suspension, often termed ferronematic, the ability of the particles to be aligned by the magnetic field results in occurrence of a partially oriented (paranematic) state above the transition temperature. This fact entails the possibility of field-tuning the transition temperature in both ways: up and down. The pertinent field-dependencies are obtained and analyzed. The same description applies to liquid-crystalline suspensions of ferroelectric nanoparticles tuned by the electric field.

Graphical abstract: Mean-field description of the order–disorder phase transition in ferronematics

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Publication details

The article was received on 19 Jun 2012, accepted on 25 Sep 2012 and first published on 16 Oct 2012


Article type: Paper
DOI: 10.1039/C2SM26423D
Citation: Soft Matter, 2013,9, 177-184
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    Mean-field description of the order–disorder phase transition in ferronematics

    Y. L. Raikher, V. I. Stepanov and A. N. Zakhlevnykh, Soft Matter, 2013, 9, 177
    DOI: 10.1039/C2SM26423D

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