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Comparison of dynamic behavior of ferroelectric and ferromagnetic nematic suspensions

Comparison of dynamic behavior of ferroelectric and ferromagnetic nematic suspensions
Comparison of dynamic behavior of ferroelectric and ferromagnetic nematic suspensions
The pioneering realization of suspensions of ferroelectric nanoparticles in a nematic host was one of excellent contributions of Yuri Reznikov to the science of liquid crystals [Y. Reznikov et al., Appl. Phys. Lett. 82 (2003) 191]. This achievement created great excitement as it entailed the enhancement of materials' dielectric properties and increase of the phase transition temperature between nematic and isotropic phase. In this contribution, we examine the spectrum of fundamental fluctuations in one of his ferroelectric suspensions by dynamic light scattering measurements, which gives insight into the coupling between the particles and the orientation of the liquid crystalline matrix. We set side by side these results with the equivalent ones obtained for the case of stable suspensions of ferromagnetic nanoplatelets in a nematic matrix showing macroscopic ferromagnetic ordering. The underlying origin of the difference between the particle-matrix coupling observed in both cases is discussed and its effect on the orientational fluctuations spectrum is compared.
Sebastian, N.
4d4002de-15e0-4c17-bc51-58b63dcc26d2
Lisjak, D.
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Copic, M.
c7beaf33-4c84-42c3-984b-f9efd62b674c
Buchnev, O.
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Mertelj, A.
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Sebastian, N.
4d4002de-15e0-4c17-bc51-58b63dcc26d2
Lisjak, D.
39e767ac-825b-4068-800c-b950c0b80257
Copic, M.
c7beaf33-4c84-42c3-984b-f9efd62b674c
Buchnev, O.
60cdb0d2-3388-47be-a066-61b3b396f69d
Mertelj, A.
86785d01-cc20-4aed-9627-0b8321b9e8a0

Sebastian, N., Lisjak, D., Copic, M., Buchnev, O. and Mertelj, A. (2017) Comparison of dynamic behavior of ferroelectric and ferromagnetic nematic suspensions. Journal of Molecular Liquids. (doi:10.1016/j.molliq.2017.11.157).

Record type: Article

Abstract

The pioneering realization of suspensions of ferroelectric nanoparticles in a nematic host was one of excellent contributions of Yuri Reznikov to the science of liquid crystals [Y. Reznikov et al., Appl. Phys. Lett. 82 (2003) 191]. This achievement created great excitement as it entailed the enhancement of materials' dielectric properties and increase of the phase transition temperature between nematic and isotropic phase. In this contribution, we examine the spectrum of fundamental fluctuations in one of his ferroelectric suspensions by dynamic light scattering measurements, which gives insight into the coupling between the particles and the orientation of the liquid crystalline matrix. We set side by side these results with the equivalent ones obtained for the case of stable suspensions of ferromagnetic nanoplatelets in a nematic matrix showing macroscopic ferromagnetic ordering. The underlying origin of the difference between the particle-matrix coupling observed in both cases is discussed and its effect on the orientational fluctuations spectrum is compared.

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Comparison of dynamic behavior of ferroelectric and ferromagnetic nematic suspensions - Accepted Manuscript
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Accepted/In Press date: 25 November 2017
e-pub ahead of print date: 5 December 2017

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Local EPrints ID: 417311
URI: http://eprints.soton.ac.uk/id/eprint/417311
PURE UUID: 931fa5aa-431f-4c74-9133-fc775473a8fd

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Date deposited: 29 Jan 2018 17:30
Last modified: 16 Mar 2024 06:08

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Contributors

Author: N. Sebastian
Author: D. Lisjak
Author: M. Copic
Author: O. Buchnev
Author: A. Mertelj

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