Correlation between interlayer exchange coupling and hydrogen absorption in V-Fe layered structures

Skoryna, J.; Wachowiak, M.; Marczyńska, A.; Rogowska, A.; Majchrzycki, Łukasz; Koczorowski, Wojciech; Czajka, Ryszard; Smardz, L.

doi:10.1016/j.surfcoat.2016.03.051

Cited by 11 publications

(11 citation statements)

References 33 publications

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“…It is well known, that the vanadium atoms near V-Fe interface polarise antiparallel to the iron atoms, especially at low temperatures [7,33]. However, the are no reports on such a polarisation near interface between iron and its oxides.…”

Section: Resultsmentioning

confidence: 99%

Natural Oxidation of thin Fe Films on V Buffer Layer

et al. 2017

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We have studied oxidation kinetics of Fe thin film under atmospheric conditions using the fact that metallic iron is a ferromagnet but ultrathin natural iron oxides are approximately nonmagnetic at room temperature. As a consequence, oxidation is associated with a loss in total Fe magnetic moment. Results show that the sample with an initial Fe thickness equal to 10 nm oxidize relatively fast (time constant τ = 0.05 day), whereby a constant amount of 2.5 nm of metal is transformed into oxides. For lower iron initial thickness (di = 4 nm) the time constant for oxidation significantly increases reaching a value of 2 days. Furthermore, X-ray photoelectron spectroscopy studies performed after 144 days of oxidation revealed formation of hematite (α-Fe2O3) thin film on the metallic rest of iron.

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Section: Resultsmentioning

confidence: 99%

Natural Oxidation of thin Fe Films on V Buffer Layer

et al. 2017

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“…A capping layer of 5 nm Pd was used to allow a fast uptake and release of hydrogen at a temperature of less than 370 K and to avoid oxidation of the MLs. As a substrate we have used Si(100) wafers with an oxidised surface to prevent a silicide formation [15][16][17].…”

Section: Methodsmentioning

confidence: 99%

Interlayer Exchange Coupling in Nb/Fe Multilayers

et al. 2018

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The (110) oriented Nb-Fe multilayers (MLs) with constant Fe and variable Nb sublayer thicknesses were prepared at room temperature using UHV magnetron sputtering. The artificial periodicity was revealed by intense satellite peaks in the low-and high-angle X-ray diffraction patterns. Magnetic hysteresis loop measurements at 5 K revealed antiferromagnetic (AF) exchange coupling of the Fe sublayers for Nb spacer thickness of about 3 monolayers. The corresponding AF coupling energy is equal to about -1.36 mJ/m 2 . The Nb spacer thickness corresponding to the position of the AF peak is in good agreement with ab-initio calculations within localized spin density approximations of exchange-correlation potential.

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“…As a substrate we have used Si(100) wafer with an oxidised surface to prevent a silicide formation [15][16][17]. The Fe-layer was deposited using a DC source.…”

Section: Methodsmentioning

confidence: 99%

Exchange Coupling Effects in Naturally Oxidised Ultrathin Iron Film

et al. 2018

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Oxidation process of Fe films under atmospheric conditions is depth limited such that an oxide covering layer with a well-defined thickness is formed by which the underlying metal is prevented from further oxidation. Iron thin film with an initial thickness di 4 nm was deposited onto 1.6 nm -V(110) buffer layer using UHV magnetron sputtering. The planar growth of Fe oxides was revealed by atomic force microscopy. X-ray photoelectron spectroscopy studies performed after 250 days of oxidation revealed formation of a hematite (α-Fe2O3q ultrathin film on the metallic rest of iron. Furthermore, low temperature magnetic measurements of the oxidised Fe ultrathin film revealed an exchange anisotropy which is imposed to the metallic rest. As a result, we have observed at low temperatures a shift and broadening of the hysteresis loops due to the exchange interaction at the metal-oxide interface.

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Correlation between interlayer exchange coupling and hydrogen absorption in V-Fe layered structures

Cited by 11 publications

References 33 publications

Natural Oxidation of thin Fe Films on V Buffer Layer

Natural Oxidation of thin Fe Films on V Buffer Layer

Interlayer Exchange Coupling in Nb/Fe Multilayers

Exchange Coupling Effects in Naturally Oxidised Ultrathin Iron Film

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