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Room temperature reversible tuning of magnetism of electrolyte-gated La0.75Sr0.25MnO3 nanoparticles

Mishra, A. K. and Darbandi, Azad J. and Leufke, Philipp M. and Kruk, Robert and Hahn, Horst (2013):
Room temperature reversible tuning of magnetism of electrolyte-gated La0.75Sr0.25MnO3 nanoparticles.
113, In: Journal of Applied Physics, (3), pp. 033913, ISSN 00218979, [Online-Edition: http://dx.doi.org/10.1063/1.4778918],
[Article]

Abstract

Reversible control of magnetization and Curie temperature (TC) by electrostatic modulation of the surface charge carrier density is presented for the strongly correlated La0.75Sr0.25MnO3 (LSMO) system. The nanoparticulate LSMO was synthesized by spray pyrolysis. A controlled post annealing was carried out to obtain a sharp magnetic transition slightly above room temperature along with favorable surface-to-volume ratios. Resulting nanoporous LSMO was electrostatically charged using a non-aqueous electrolyte with applied voltage limited within the purely capacitive window. The electrostatic charging effect on magnetization was investigated around TC for varying temperatures and applied magnetic fields. The resultant magnetization modulation upon charging is discussed in terms of the reversible electrostatic hole doping.

Item Type: Article
Erschienen: 2013
Creators: Mishra, A. K. and Darbandi, Azad J. and Leufke, Philipp M. and Kruk, Robert and Hahn, Horst
Title: Room temperature reversible tuning of magnetism of electrolyte-gated La0.75Sr0.25MnO3 nanoparticles
Language: English
Abstract:

Reversible control of magnetization and Curie temperature (TC) by electrostatic modulation of the surface charge carrier density is presented for the strongly correlated La0.75Sr0.25MnO3 (LSMO) system. The nanoparticulate LSMO was synthesized by spray pyrolysis. A controlled post annealing was carried out to obtain a sharp magnetic transition slightly above room temperature along with favorable surface-to-volume ratios. Resulting nanoporous LSMO was electrostatically charged using a non-aqueous electrolyte with applied voltage limited within the purely capacitive window. The electrostatic charging effect on magnetization was investigated around TC for varying temperatures and applied magnetic fields. The resultant magnetization modulation upon charging is discussed in terms of the reversible electrostatic hole doping.

Journal or Publication Title: Journal of Applied Physics
Volume: 113
Number: 3
Uncontrolled Keywords: Curie temperature, carrier density, electrolytes, lanthanum compounds, magnetic annealing, magnetic particles, magnetisation reversal, nanofabrication, nanomagnetics, pyrolysis, strongly correlated electron systems, strontium compounds, surface charging, surface magnetism, thermal spraying
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 06 Feb 2014 09:13
Official URL: http://dx.doi.org/10.1063/1.4778918
Identification Number: doi:10.1063/1.4778918
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