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Spontaneous liquid crystal and ferromagnetic ordering of colloidal magnetic nanoplates

Ferrofluids are familiar as colloidal suspensions of ferromagnetic nanoparticles in aqueous or organic solvents. The dispersed particles are randomly oriented but their moments become aligned if a magnetic field is applied, producing a variety of exotic and useful magnetomechanical effects. A longst...

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Autores principales: Shuai, M., Klittnick, A., Shen, Y., Smith, G. P., Tuchband, M. R., Zhu, C., Petschek, R. G., Mertelj, A., Lisjak, D., Čopič, M., Maclennan, J. E., Glaser, M. A., Clark, N. A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4738347/
https://www.ncbi.nlm.nih.gov/pubmed/26817823
http://dx.doi.org/10.1038/ncomms10394
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author Shuai, M.
Klittnick, A.
Shen, Y.
Smith, G. P.
Tuchband, M. R.
Zhu, C.
Petschek, R. G.
Mertelj, A.
Lisjak, D.
Čopič, M.
Maclennan, J. E.
Glaser, M. A.
Clark, N. A.
author_facet Shuai, M.
Klittnick, A.
Shen, Y.
Smith, G. P.
Tuchband, M. R.
Zhu, C.
Petschek, R. G.
Mertelj, A.
Lisjak, D.
Čopič, M.
Maclennan, J. E.
Glaser, M. A.
Clark, N. A.
author_sort Shuai, M.
collection PubMed
description Ferrofluids are familiar as colloidal suspensions of ferromagnetic nanoparticles in aqueous or organic solvents. The dispersed particles are randomly oriented but their moments become aligned if a magnetic field is applied, producing a variety of exotic and useful magnetomechanical effects. A longstanding interest and challenge has been to make such suspensions macroscopically ferromagnetic, that is having uniform magnetic alignment in the absence of a field. Here we report a fluid suspension of magnetic nanoplates that spontaneously aligns into an equilibrium nematic liquid crystal phase that is also macroscopically ferromagnetic. Its zero-field magnetization produces distinctive magnetic self-interaction effects, including liquid crystal textures of fluid block domains arranged in closed flux loops, and makes this phase highly sensitive, with it dramatically changing shape even in the Earth's magnetic field.
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spelling pubmed-47383472016-03-04 Spontaneous liquid crystal and ferromagnetic ordering of colloidal magnetic nanoplates Shuai, M. Klittnick, A. Shen, Y. Smith, G. P. Tuchband, M. R. Zhu, C. Petschek, R. G. Mertelj, A. Lisjak, D. Čopič, M. Maclennan, J. E. Glaser, M. A. Clark, N. A. Nat Commun Article Ferrofluids are familiar as colloidal suspensions of ferromagnetic nanoparticles in aqueous or organic solvents. The dispersed particles are randomly oriented but their moments become aligned if a magnetic field is applied, producing a variety of exotic and useful magnetomechanical effects. A longstanding interest and challenge has been to make such suspensions macroscopically ferromagnetic, that is having uniform magnetic alignment in the absence of a field. Here we report a fluid suspension of magnetic nanoplates that spontaneously aligns into an equilibrium nematic liquid crystal phase that is also macroscopically ferromagnetic. Its zero-field magnetization produces distinctive magnetic self-interaction effects, including liquid crystal textures of fluid block domains arranged in closed flux loops, and makes this phase highly sensitive, with it dramatically changing shape even in the Earth's magnetic field. Nature Publishing Group 2016-01-28 /pmc/articles/PMC4738347/ /pubmed/26817823 http://dx.doi.org/10.1038/ncomms10394 Text en Copyright © 2016, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Shuai, M.
Klittnick, A.
Shen, Y.
Smith, G. P.
Tuchband, M. R.
Zhu, C.
Petschek, R. G.
Mertelj, A.
Lisjak, D.
Čopič, M.
Maclennan, J. E.
Glaser, M. A.
Clark, N. A.
Spontaneous liquid crystal and ferromagnetic ordering of colloidal magnetic nanoplates
title Spontaneous liquid crystal and ferromagnetic ordering of colloidal magnetic nanoplates
title_full Spontaneous liquid crystal and ferromagnetic ordering of colloidal magnetic nanoplates
title_fullStr Spontaneous liquid crystal and ferromagnetic ordering of colloidal magnetic nanoplates
title_full_unstemmed Spontaneous liquid crystal and ferromagnetic ordering of colloidal magnetic nanoplates
title_short Spontaneous liquid crystal and ferromagnetic ordering of colloidal magnetic nanoplates
title_sort spontaneous liquid crystal and ferromagnetic ordering of colloidal magnetic nanoplates
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4738347/
https://www.ncbi.nlm.nih.gov/pubmed/26817823
http://dx.doi.org/10.1038/ncomms10394
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