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Alternating current magnetic susceptibility of a ferronematic
We report on experimental studies focusing on the dynamic ac magnetic susceptibility of a ferronematic. It has been shown recently, that in the isotropic phase of a ferronematic, a weak dc bias magnetic field of a few oersteds increases the ac magnetic susceptibility. This increment vanishes irrever...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Beilstein-Institut
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5727767/ https://www.ncbi.nlm.nih.gov/pubmed/29259866 http://dx.doi.org/10.3762/bjnano.8.251 |
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author | Tomašovičová, Natália Kováč, Jozef Gdovinová, Veronika Éber, Nándor Tóth-Katona, Tibor Jadżyn, Jan Kopčanský, Peter |
author_facet | Tomašovičová, Natália Kováč, Jozef Gdovinová, Veronika Éber, Nándor Tóth-Katona, Tibor Jadżyn, Jan Kopčanský, Peter |
author_sort | Tomašovičová, Natália |
collection | PubMed |
description | We report on experimental studies focusing on the dynamic ac magnetic susceptibility of a ferronematic. It has been shown recently, that in the isotropic phase of a ferronematic, a weak dc bias magnetic field of a few oersteds increases the ac magnetic susceptibility. This increment vanishes irreversibly if the substance is cooled down to the nematic phase, but can be reinduced by applying the dc bias field again in the isotropic phase [Tomašovičová, N. et al. Soft Matter 2016, 12, 5780–5786]. The effect has no analogue in the neat host liquid crystal. Here, we demonstrate that by doubling the concentration of the magnetic nanoparticles, the range of the dc bias magnetic field to which the ferronematic is sensitive without saturation can be increased by about two orders of magnitude. This finding paves a way to application possibilities, such as low magnetic field sensors, or basic logical elements for information storage. |
format | Online Article Text |
id | pubmed-5727767 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Beilstein-Institut |
record_format | MEDLINE/PubMed |
spelling | pubmed-57277672017-12-19 Alternating current magnetic susceptibility of a ferronematic Tomašovičová, Natália Kováč, Jozef Gdovinová, Veronika Éber, Nándor Tóth-Katona, Tibor Jadżyn, Jan Kopčanský, Peter Beilstein J Nanotechnol Full Research Paper We report on experimental studies focusing on the dynamic ac magnetic susceptibility of a ferronematic. It has been shown recently, that in the isotropic phase of a ferronematic, a weak dc bias magnetic field of a few oersteds increases the ac magnetic susceptibility. This increment vanishes irreversibly if the substance is cooled down to the nematic phase, but can be reinduced by applying the dc bias field again in the isotropic phase [Tomašovičová, N. et al. Soft Matter 2016, 12, 5780–5786]. The effect has no analogue in the neat host liquid crystal. Here, we demonstrate that by doubling the concentration of the magnetic nanoparticles, the range of the dc bias magnetic field to which the ferronematic is sensitive without saturation can be increased by about two orders of magnitude. This finding paves a way to application possibilities, such as low magnetic field sensors, or basic logical elements for information storage. Beilstein-Institut 2017-11-27 /pmc/articles/PMC5727767/ /pubmed/29259866 http://dx.doi.org/10.3762/bjnano.8.251 Text en Copyright © 2017, Tomašovičová et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms) |
spellingShingle | Full Research Paper Tomašovičová, Natália Kováč, Jozef Gdovinová, Veronika Éber, Nándor Tóth-Katona, Tibor Jadżyn, Jan Kopčanský, Peter Alternating current magnetic susceptibility of a ferronematic |
title | Alternating current magnetic susceptibility of a ferronematic |
title_full | Alternating current magnetic susceptibility of a ferronematic |
title_fullStr | Alternating current magnetic susceptibility of a ferronematic |
title_full_unstemmed | Alternating current magnetic susceptibility of a ferronematic |
title_short | Alternating current magnetic susceptibility of a ferronematic |
title_sort | alternating current magnetic susceptibility of a ferronematic |
topic | Full Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5727767/ https://www.ncbi.nlm.nih.gov/pubmed/29259866 http://dx.doi.org/10.3762/bjnano.8.251 |
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