In order to provide a structural basis for a physical understanding of exchange bias in metal/magnetic-oxide interfaces, we have determined the structure of the Fe/NiO(001) interface by means of x-ray absorption spectroscopy and ab initio density functional theory calculations. A Fe-Ni alloyed phase on top of an interfacial FeO planar layer is formed. The FeO layer exhibits a 7% expanded interlayer distance and a 0.3 angstrom buckling; its presence is predicted to increase the spin magnetic moment of the interface Fe atoms by 0.6 mu(B), compared to the ideally abrupt interface. RI Manghi, Franca/G-8719-2012

Iron oxidation, interfacial expansion, and buckling at the Fe/NiO(001) interface

Di Giustino L;
2006-01-01

Abstract

In order to provide a structural basis for a physical understanding of exchange bias in metal/magnetic-oxide interfaces, we have determined the structure of the Fe/NiO(001) interface by means of x-ray absorption spectroscopy and ab initio density functional theory calculations. A Fe-Ni alloyed phase on top of an interfacial FeO planar layer is formed. The FeO layer exhibits a 7% expanded interlayer distance and a 0.3 angstrom buckling; its presence is predicted to increase the spin magnetic moment of the interface Fe atoms by 0.6 mu(B), compared to the ideally abrupt interface. RI Manghi, Franca/G-8719-2012
2006
Luches, P; Bellini, V; Colonna, S; Di Giustino, L; Manghi, F; Valeri, S; Boscherini, F
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2114536
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