Phase composition and magnetic structure in nanocrystalline ferromagnetic Fe–N–O films

Sheftel, E. N.; Tedzhetov, Valentin A.; Harin, E.V.; Усманова, Г. Ш.

doi:10.1016/j.cap.2020.09.009

Cited by 4 publications

(1 citation statement)

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“…The interest in the study of 2 of 15 iron oxynitride films (Fe-O-N) is to elaborate a material that exhibits intermediate properties between those of iron oxide and iron nitride films. The Fe-O-N thin films have been studied for potential application to photoelectrochemical water splitting to generate hydrogen, solar application [11], magnetic [12], optical, electronic, etc. properties [13,14].…”

Section: Introductionmentioning

confidence: 99%

Influence of Oxygen Flow Rate on the Properties of FeOXNY Films Obtained by Magnetron Sputtering at High Nitrogen Pressure

et al. 2022

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Fe-O-N films were successfully deposited by magnetron sputtering of an iron target in Ar-N2-O2 reactive mixtures at high nitrogen partial pressure 1.11 Pa (Q(N2) = 8 sccm) using a constant flow rate of argon and an oxygen flow rate Q(O2) varying from 0 to 1.6 sccm. The chemical composition and the structural and microstructural nature of these films were characterized using Rutherford Backscattering Spectrometry, X-ray diffraction, and Conversion Electron Mössbauer Spectrometry, respectively. The results showed that the films deposited without oxygen are composed of a single phase of γ″-FeN, whereas the other films do not consist of pure oxides but oxidelike oxynitrides. With higher oxygen content, the films are well-crystallized in the α-Fe2O3 structure. At intermediate oxygen flow rate, the films are rather poorly crystallized and can be described as a mixture of oxide γ-Fe2O3/Fe3O4. In addition, the electrical behavior of the films evolved from a metallic one to a semiconductor one, which is in total agreement with other investigations. Comparatively to a previous study carried out at low nitrogen partial pressure (0.25 Pa), this behavior of films prepared at higher nitrogen partial pressure (1.11 Pa) could be caused by a catalytic effect of nitrogen on the crystallization of the hematite structure.

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Section: Introductionmentioning

confidence: 99%