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| 001 | 911258 | ||
| 005 | 20250129094401.0 | ||
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| 037 | _ | _ | |a FZJ-2022-04554 |
| 100 | 1 | _ | |a Xu, Yifan |0 P:(DE-Juel1)186907 |b 0 |u fzj |
| 111 | 2 | _ | |a International workshop GISAXS2022 |c DESY, Hamburg |d 2022-11-16 - 2022-11-18 |w Germany |
| 245 | _ | _ | |a Investigation of the oxygen vacanciy diffusion via applied electric field in oxide heterostructures |
| 260 | _ | _ | |c 2022 |
| 336 | 7 | _ | |a Conference Paper |0 33 |2 EndNote |
| 336 | 7 | _ | |a INPROCEEDINGS |2 BibTeX |
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| 520 | _ | _ | |a The ability to tune magnetic oxide phases via redox reactions across their heterointerfacescould lead to useful spintronic and memristive device applications. By applyinga small electric field, oxidation/reduction occurs at the heterointerface and leads to areversible phase transition [1-2]. In this poster, we present the preparation and characterizationof epitaxial Fe3O4 thin films grown on TiO2 - terminated Nb:STO via pulsedlaser deposition (PLD). Using magnetometry, we detect the Verwey transition; a strongindicator of the oxygen content in the Fe3O4 films. We observe a significant decreasein the Verwey transition temperature with applied positive electric field. This could bebe explained by oxygen diffusion through the interface which then leads to a reversiblephase transition from Fe3O4(magnetite) to γ-Fe2O3(maghemite). The oxygen diffusionalso induces a structural change of the crystal lattice. Using x-ray diffraction (XRD),we can investigate the strain and structural transitions in the out-of-plane direction.Interestingly, by GISAXS we observe a decrease of the magnetite domain size for thesample after applying the electric field. We surmise this arises due to oxygen diffusionbetween interfaces. PNR measurements are being planned to confirm this. |
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| 700 | 1 | _ | |a Hussein, Mai |0 P:(DE-Juel1)169789 |b 1 |u fzj |
| 700 | 1 | _ | |a Bednarski-Meinke, Connie |0 P:(DE-Juel1)184662 |b 2 |u fzj |
| 700 | 1 | _ | |a Qdemat, Asmaa |0 P:(DE-Juel1)187095 |b 3 |u fzj |
| 700 | 1 | _ | |a Tober, Steffen |0 P:(DE-Juel1)191430 |b 4 |u fzj |
| 700 | 1 | _ | |a Kentzinger, Emmanuel |0 P:(DE-Juel1)130754 |b 5 |u fzj |
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| 700 | 1 | _ | |a Brückel, Thomas |0 P:(DE-Juel1)130572 |b 7 |u fzj |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/911258/files/Yifan_DESY_Abstract_final.pdf |y OpenAccess |
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