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High surface stability of magnetite on bi-layer Fe₃O₄/Fe/MgO(0 0 1) films under 1 MeV Kr⁺ ion irradiation

Kim-Ngan, N.-T. H. ; Krupska, M. ; Balogh, A. G. ; Malinsky, P. ; Mackova, A. (2024)
High surface stability of magnetite on bi-layer Fe₃O₄/Fe/MgO(0 0 1) films under 1 MeV Kr⁺ ion irradiation.
In: Advances in Natural Sciences: Nanoscience and Nanotechnology, 2017, 8 (4)
doi: 10.26083/tuprints-00020374
Article, Secondary publication, Publisher's Version

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Abstract

We investigate the stability of the bi-layer Fe₃O₄/Fe/MgO(0 0 1) films grown epitaxially on MgO(0 0 1) substrates with the layer thickness in the range of 25–100 nm upon 1 MeV Kr⁺ ion irradiation. The layer structure and layer composition of the films before and after ion irradiation were studied by XRR, RBS and RBS-C techniques. The interdiffusion and intermixing was analyzed. No visible change in the RBS spectra was observed upon irradiation with ion fluence below 10¹⁵ Kr cm⁻². The bi-layer structure and the stoichiometric Fe₃O₄ layer on the surface were well preserved after Kr+ ion irradiation at low damage levels, although the strong intermixing implied a large interfacial (FexOy) and (Fe, Mg)Oy layer respective at Fe₃O₄–Fe and Fe–MgO interface. The high ion fluence of 3.8 × 10¹⁶ Kr cm⁻² has induced a complete oxidization of the buffer Fe layer. Under such Kr fluence, the stoichiometry of the Fe₃O₄ surface layer was still preserved indicating its high stability. The entire film contains FexOy -type composition at ion fluence large than 5.0 × 10¹⁶ Kr cm⁻².

Item Type: Article
Erschienen: 2024
Creators: Kim-Ngan, N.-T. H. ; Krupska, M. ; Balogh, A. G. ; Malinsky, P. ; Mackova, A.
Type of entry: Secondary publication
Title: High surface stability of magnetite on bi-layer Fe₃O₄/Fe/MgO(0 0 1) films under 1 MeV Kr⁺ ion irradiation
Language: English
Date: 9 January 2024
Place of Publication: Darmstadt
Year of primary publication: 2017
Place of primary publication: Bristol
Publisher: IOP Publishing
Journal or Publication Title: Advances in Natural Sciences: Nanoscience and Nanotechnology
Volume of the journal: 8
Issue Number: 4
Collation: 9 Seiten
DOI: 10.26083/tuprints-00020374
URL / URN: https://tuprints.ulb.tu-darmstadt.de/20374
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

We investigate the stability of the bi-layer Fe₃O₄/Fe/MgO(0 0 1) films grown epitaxially on MgO(0 0 1) substrates with the layer thickness in the range of 25–100 nm upon 1 MeV Kr⁺ ion irradiation. The layer structure and layer composition of the films before and after ion irradiation were studied by XRR, RBS and RBS-C techniques. The interdiffusion and intermixing was analyzed. No visible change in the RBS spectra was observed upon irradiation with ion fluence below 10¹⁵ Kr cm⁻². The bi-layer structure and the stoichiometric Fe₃O₄ layer on the surface were well preserved after Kr+ ion irradiation at low damage levels, although the strong intermixing implied a large interfacial (FexOy) and (Fe, Mg)Oy layer respective at Fe₃O₄–Fe and Fe–MgO interface. The high ion fluence of 3.8 × 10¹⁶ Kr cm⁻² has induced a complete oxidization of the buffer Fe layer. Under such Kr fluence, the stoichiometry of the Fe₃O₄ surface layer was still preserved indicating its high stability. The entire film contains FexOy -type composition at ion fluence large than 5.0 × 10¹⁶ Kr cm⁻².

Uncontrolled Keywords: 2.00 nanoscience, 4.10 thin film, 4.14 surface and interface
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-203744
Classification DDC: 500 Science and mathematics > 530 Physics
500 Science and mathematics > 540 Chemistry
600 Technology, medicine, applied sciences > 660 Chemical engineering
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
Date Deposited: 09 Jan 2024 11:02
Last Modified: 10 Jan 2024 09:50
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