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Orientational dynamics of a ferronematic liquid crystal in a rotating magnetic field

  • Statistical, Nonlinear, and Soft Matter Physics
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Abstract

The behavior of the orientational structure of a ferronematic in a rotating uniform magnetic field is investigated using the continual theory. The time-dependent system of equations describing the dynamics of the ferronematic is derived. The dependences of the angles of rotation of the director and of the magnetization of the ferronematic on the velocity of field rotation are determined for various values of the material parameters. Two regimes (synchronous and asynchronous) of rotation of the ferronematic structure are detected. In the synchronous regime, the director rotates with the frequency of the magnetic field and a constant phase delay. The asynchronous regime is characterized by a time-dependent phase delay. The dependence of the critical angular velocity of magnetic field rotation, which determines the boundary between the synchronous and asynchronous regimes, on the magnetic field strength is derived.

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Authors and Affiliations

  1. Perm State University, Perm, 614990, Russia

    A. N. Boychuk, A. N. Zakhlevnykh & D. V. Makarov

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  1. A. N. Boychuk
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  2. A. N. Zakhlevnykh
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  3. D. V. Makarov
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Correspondence to A. N. Boychuk.

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Original Russian Text © A.N. Boychuk, A.N. Zakhlevnykh, D.V. Makarov, 2015, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2015, Vol. 148, No. 3, pp. 617–629.

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Boychuk, A.N., Zakhlevnykh, A.N. & Makarov, D.V. Orientational dynamics of a ferronematic liquid crystal in a rotating magnetic field. J. Exp. Theor. Phys. 121, 541–552 (2015). https://doi.org/10.1134/S1063776115090046

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  • DOI: https://doi.org/10.1134/S1063776115090046

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