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Hybrid supercapacitors for reversible control of magnetism

Molinari, Alan 1; Leufke, Philipp M. 1; Reitz, Christian 1; Dasgupta, Subho 1; Witte, Ralf 1; Kruk, Robert 1; Hahn, Horst 1
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)

Abstract:

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 La0.74Sr0.26MnO3/ionic liquid interface to control the balance between ferromagnetic and non-ferromagnetic phases of La1−xSrxMnO3 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.


Volltext §
DOI: 10.5445/IR/1000070578
Originalveröffentlichung
DOI: 10.1038/ncomms15339
Scopus
Zitationen: 51
Web of Science
Zitationen: 49
Dimensions
Zitationen: 54
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 2041-1723
urn:nbn:de:swb:90-705780
KITopen-ID: 1000070578
HGF-Programm 43.22.01 (POF III, LK 01) Functionality by Design
Erschienen in Nature Communications
Verlag Nature Research
Band 8
Seiten Art. Nr.: 15339
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter Chemical physicsMagnetic properties and materialsSurfaces, interfaces and thin films
Nachgewiesen in Dimensions
Web of Science
Scopus
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