Natural Oxidation of thin Fe Films on V Buffer Layer
[ 1 ] Institute of Molecular Physics, Polish Academy of Sciences, Poznań, Poland | [ 2 ] Instytut Fizyki, Wydział Fizyki Technicznej, Politechnika Poznańska | [ S ] student | [ P ] pracownik
2017
artykuł naukowy
angielski
EN 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.
04.2018
1272 - 1276
witryna wydawcy
ostateczna wersja opublikowana
15
15
0,857
WoS (15)