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Hybrid supercapacitors for reversible control of magnetism

Electric field tuning of magnetism is one of the most intensely pursued research topics of recent times aiming at the development of new-generation low-power spintronics and microelectronics. However, a reversible magnetoelectric effect with an on/off ratio suitable for easy and precise device opera...

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Autores principales: Molinari, Alan, Leufke, Philipp M., Reitz, Christian, Dasgupta, Subho, Witte, Ralf, Kruk, Robert, Hahn, Horst
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5436217/
https://www.ncbi.nlm.nih.gov/pubmed/28489078
http://dx.doi.org/10.1038/ncomms15339
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author Molinari, Alan
Leufke, Philipp M.
Reitz, Christian
Dasgupta, Subho
Witte, Ralf
Kruk, Robert
Hahn, Horst
author_facet Molinari, Alan
Leufke, Philipp M.
Reitz, Christian
Dasgupta, Subho
Witte, Ralf
Kruk, Robert
Hahn, Horst
author_sort Molinari, Alan
collection PubMed
description Electric field tuning of magnetism is one of the most intensely pursued research topics of recent times aiming at the development of new-generation low-power spintronics and microelectronics. However, a reversible magnetoelectric effect with an on/off ratio suitable for easy and precise device operation is yet to be achieved. Here we propose a novel route to robustly tune magnetism via the charging/discharging processes of hybrid supercapacitors, which involve electrostatic (electric-double-layer capacitance) and electrochemical (pseudocapacitance) doping. We use both charging mechanisms—occurring at the La(0.74)Sr(0.26)MnO(3)/ionic liquid interface to control the balance between ferromagnetic and non-ferromagnetic phases of La(1−x)Sr(x)MnO(3) to an unprecedented extent. A magnetic modulation of up to ≈33% is reached above room temperature when applying an external potential of only about 2.0 V. Our case study intends to draw attention to new, reversible physico-chemical phenomena in the rather unexplored area of magnetoelectric supercapacitors.
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spelling pubmed-54362172017-05-25 Hybrid supercapacitors for reversible control of magnetism Molinari, Alan Leufke, Philipp M. Reitz, Christian Dasgupta, Subho Witte, Ralf Kruk, Robert Hahn, Horst Nat Commun Article Electric field tuning of magnetism is one of the most intensely pursued research topics of recent times aiming at the development of new-generation low-power spintronics and microelectronics. However, a reversible magnetoelectric effect with an on/off ratio suitable for easy and precise device operation is yet to be achieved. Here we propose a novel route to robustly tune magnetism via the charging/discharging processes of hybrid supercapacitors, which involve electrostatic (electric-double-layer capacitance) and electrochemical (pseudocapacitance) doping. We use both charging mechanisms—occurring at the La(0.74)Sr(0.26)MnO(3)/ionic liquid interface to control the balance between ferromagnetic and non-ferromagnetic phases of La(1−x)Sr(x)MnO(3) to an unprecedented extent. A magnetic modulation of up to ≈33% is reached above room temperature when applying an external potential of only about 2.0 V. Our case study intends to draw attention to new, reversible physico-chemical phenomena in the rather unexplored area of magnetoelectric supercapacitors. Nature Publishing Group 2017-05-10 /pmc/articles/PMC5436217/ /pubmed/28489078 http://dx.doi.org/10.1038/ncomms15339 Text en Copyright © 2017, The Author(s) 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
Molinari, Alan
Leufke, Philipp M.
Reitz, Christian
Dasgupta, Subho
Witte, Ralf
Kruk, Robert
Hahn, Horst
Hybrid supercapacitors for reversible control of magnetism
title Hybrid supercapacitors for reversible control of magnetism
title_full Hybrid supercapacitors for reversible control of magnetism
title_fullStr Hybrid supercapacitors for reversible control of magnetism
title_full_unstemmed Hybrid supercapacitors for reversible control of magnetism
title_short Hybrid supercapacitors for reversible control of magnetism
title_sort hybrid supercapacitors for reversible control of magnetism
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5436217/
https://www.ncbi.nlm.nih.gov/pubmed/28489078
http://dx.doi.org/10.1038/ncomms15339
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