This title appears in the Scientific Report :
2023
Please use the identifier:
http://hdl.handle.net/2128/34470 in citations.
Magnetite (Fe3−𝛿O4) homoepitaxy observed by X-ray intensity growth oscillations
Magnetite (Fe3−𝛿O4) homoepitaxy observed by X-ray intensity growth oscillations
Processes on the Fe3−𝛿O4 (001) surface like oxidative regrowth, (partial)lifting of the subsurface cation vacancy reconstruction and theelement-specific incorporation of adatoms demonstrate the sensitiverelation of oxygen pressure, cation transport and structure in the nearsurfaceregion of Fe3−𝛿O4 i...
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Personal Name(s): | Tober, Steffen |
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Creutzburg, Marcus / Arndt, Björn / Chung, Simon / Jacobse, Leon / Jeromin, Arno / Vonk, Vedran / Stierle, Andreas | |
Contributing Institute: |
Streumethoden; JCNS-2 JARA-FIT; JARA-FIT Streumethoden; PGI-4 |
Imprint: |
2023
|
Conference: | DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM), Dresden (Germany), 2023-03-26 - 2023-03-31 |
Document Type: |
Conference Presentation |
Research Program: |
Jülich Centre for Neutron Research (JCNS) (FZJ) Materials – Quantum, Complex and Functional Materials |
Link: |
OpenAccess |
Publikationsportal JuSER |
Processes on the Fe3−𝛿O4 (001) surface like oxidative regrowth, (partial)lifting of the subsurface cation vacancy reconstruction and theelement-specific incorporation of adatoms demonstrate the sensitiverelation of oxygen pressure, cation transport and structure in the nearsurfaceregion of Fe3−𝛿O4 influencing the performance of catalysts anddevices [1,2,3]. We exemplarily studied the homoepitaxial growth ofFe3−𝛿O4 (001) in dependence of the O2 pressure and iron flux. Xrayintensity growth oscillations proved ordered growth of Fe3−𝛿O4for all probed conditions while atomic force microscopy revealed newlyformed micrometre-sized surface structures exceeding the amount ofdeposited material [4]. Our results indicate the presence of multipleparallel processes during reactive Fe3−𝛿O4 homoepitaxy suggestingsimilar processes to occur also in other applications of Fe3−𝛿O4.[1] Nie et al., J. Am. Chem. Soc. 135, 10091 (2013), [2] Arndt, B. etal. PCCP 22, 8336 (2020), [3] Mirabella et al., Electrochimica Acta,389, 138638 (2021), [4] van der Vegt et al., Phys. Rev. Lett. 68, 3335(1992) |