Exchange Coupling Effects in Naturally Oxidised Ultrathin Iron Film
[ 1 ] Instytut Fizyki, Wydział Fizyki Technicznej, Politechnika Poznańska | [ P ] employee
2018
scientific article
english
PL 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.
601 - 604
publisher's website
final published version
15
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