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Hydrogen control of double exchange interaction in La0.67Sr0.33MnO3 for ionic-electric-magnetic coupled applications

Title
Hydrogen control of double exchange interaction in La0.67Sr0.33MnO3 for ionic-electric-magnetic coupled applications
Authors
Lee, JaehyunHa, YoungkyoungLee, Shinbuhm
DGIST Authors
Lee, Jaehyun; Ha, Youngkyoung; Lee, Shinbuhm
Issue Date
2021-03
Citation
Advanced Materials, 33(11), 2007606
Type
Article
Article Type
Article
Author Keywords
double exchange interactionionic–electric–magnetic couplingLa-067Sr(0)33MnO(3)low-temperature processreversible metal–insulator transitionroom-temperature ferromagnetism
Keywords
Electrical and magnetic propertyElectronic band-structureFerromagnetic magnetizationHigh reproducibilityHydrogen concentrationLong term stabilityThree orders of magnitudeTuningExchange interactionsHydrogenIon exchangeIonsLanthanum compoundsMagnetismManganese compoundsSemiconductor dopingStrontium compoundsDouble exchange interactions
ISSN
0935-9648
Abstract
The dynamic tuning of ion concentrations has attracted significant attention for creating versatile functionalities of materials, which are impossible to reach using classical control knobs. Despite these merits, the following fundamental questions remain: how do ions affect the electronic bandstructure, and how do ions simultaneously change the electrical and magnetic properties? Here, by annealing platinum-dotted La0.67Sr0.33MnO3 films in hydrogen and argon at a lower temperature of 200 °C for several minutes, a reversible change in resistivity is achieved by three orders of magnitude with tailored ferromagnetic magnetization. The transition occurs through the tuning of the double exchange interaction, ascribed to an electron-doping-induced and/or a lattice-expansion-induced modulation, along with an increase in the hydrogen concentration. High reproducibility, long-term stability, and multilevel linearity are appealing for ionic–electric–magnetic coupled applications. © 2021 Wiley-VCH GmbH
URI
http://hdl.handle.net/20.500.11750/13034
DOI
10.1002/adma.202007606
Publisher
John Wiley & Sons, Inc.
Related Researcher
  • Author Lee, Shinbuhm Multifunctional films and nanostructures Lab
  • Research Interests Multifunctional films; Experimental condensed matter physics
Files:
There are no files associated with this item.
Collection:
Department of Physics and ChemistryMultifunctional films and nanostructures Lab1. Journal Articles


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