000631049 001__ 631049 000631049 005__ 20250715151532.0 000631049 0247_ $$2doi$$a10.1103/PhysRevLett.134.236203 000631049 0247_ $$2ISSN$$a0031-9007 000631049 0247_ $$2ISSN$$a1092-0145 000631049 0247_ $$2ISSN$$a1079-7114 000631049 0247_ $$2datacite_doi$$a10.3204/PUBDB-2025-01918 000631049 0247_ $$2openalex$$aopenalex:W4411277892 000631049 037__ $$aPUBDB-2025-01918 000631049 041__ $$aEnglish 000631049 082__ $$a530 000631049 1001_ $$0P:(DE-H253)PIP1030341$$aTober, Steffen$$b0$$eCorresponding author$$udesy 000631049 245__ $$aSite-Resolved Near-Surface Cation Diffusion in Magnetite 000631049 260__ $$aCollege Park, Md.$$bAPS$$c2025 000631049 3367_ $$2DRIVER$$aarticle 000631049 3367_ $$2DataCite$$aOutput Types/Journal article 000631049 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1750334446_1699581 000631049 3367_ $$2BibTeX$$aARTICLE 000631049 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000631049 3367_ $$00$$2EndNote$$aJournal Article 000631049 520__ $$aIn situ nuclear forward scattering shows a thermally induced cation exchange between a 57 Fe3 O4 thin-film and a Fe3 O4 (001) substrate predominantly in the octahedral sublattice for a temperature range between 470 and 710 K. The overall activation barrier in this temperature range is found to be 19±32 kJ/mol, which is significantly lower than expected from extrapolating a bulk diffusion model. This observation can be attributed to the large out-of-equilibrium cation deficit as determined by surface x-ray diffraction. Despite the relatively low hopping barrier, the diffusion constant is about 5 orders of magnitude lower than expected for magnetite having an equilibrium cation stoichiometry. The results are relevant for applications relying on the near-surface structure and stoichiometry of magnetite, and we argue that the correlation between cation diffusion and stoichiometry may play a role for a wider range of oxide materials. 000631049 536__ $$0G:(DE-HGF)POF4-632$$a632 - Materials – Quantum, Complex and Functional Materials (POF4-632)$$cPOF4-632$$fPOF IV$$x0 000631049 536__ $$0G:(GEPRIS)318029273$$aSFB 986 C07 - Deposition und Stabilität von hochtemperaturfesten geschichteten Metamaterialien (C07) (318029273)$$c318029273$$x1 000631049 536__ $$0G:(GEPRIS)192346071$$aDFG project G:(GEPRIS)192346071 - SFB 986: Maßgeschneiderte Multiskalige Materialsysteme - M3 (192346071)$$c192346071$$x2 000631049 588__ $$aDataset connected to CrossRef, Journals: bib-pubdb1.desy.de 000631049 693__ $$0EXP:(DE-H253)Nanolab-01-20150101$$1EXP:(DE-H253)DESY-NanoLab-20150101$$5EXP:(DE-H253)Nanolab-01-20150101$$aNanolab$$eDESY NanoLab: Sample Preparation$$x0 000631049 693__ 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Alina$$b8 000631049 7001_ $$0P:(DE-H253)PIP1014894$$aSteinbrügge, René$$b9 000631049 7001_ $$0P:(DE-H253)PIP1006032$$aWille, Hans-Christian$$b10$$udesy 000631049 7001_ $$0P:(DE-H253)PIP1016663$$aSergeev, Ilya$$b11$$udesy 000631049 7001_ $$0P:(DE-H253)PIP1018647$$aNoei, Heshmat$$b12$$udesy 000631049 7001_ $$0P:(DE-H253)PIP1005914$$aSchlage, Kai$$b13$$udesy 000631049 7001_ $$0P:(DE-H253)PIP1002084$$aLeupold, Olaf$$b14$$udesy 000631049 7001_ $$0P:(DE-H253)PIP1013931$$aVonk, Vedran$$b15$$eCorresponding author 000631049 7001_ $$0P:(DE-H253)PIP1012873$$aStierle, Andreas$$b16$$eCorresponding author 000631049 773__ $$0PERI:(DE-600)1472655-5$$a10.1103/PhysRevLett.134.236203$$gVol. 134, no. 23, p. 236203$$n23$$p236203$$tPhysical review letters$$v134$$x0031-9007$$y2025 000631049 8564_ $$uhttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.134.236203 000631049 8564_ $$uhttps://bib-pubdb1.desy.de/record/631049/files/PhysRevLett.134.236203.pdf$$yOpenAccess 000631049 8564_ 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