A structural characterization of the Fe/NiO(100) and Fe/MgO(100)interfaces is reported. Polarization-dependent X-ray absorptionspectroscopy has been employed to explore the local atomicstructure of the interfaces. A strong difference between the twosystems is observed: the Fe/MgO(100) interface does not showa significant Fe oxidation or oxygen diffusion while a buckledFeO like layer is observed at Fe/NiO(001). Moreover, while on theMgO(001) substrate the tetragonal strain is released at 10 ML Fethickness, a residual epitaxial strain can be observed on a film ofthe same thickness on NiO(001). A magnetic characterization of theFe/NiO(001) system by linear and non-linear magneto-optical Kerreffect measurements is also reported and discussed.' 2009 Elsevier Ltd. All rights reserved.
Fe/NiO(100) and Fe/MgO(100) interfaces studied by X-rayabsorption spectroscopy and non-linear Kerr effect / S., Colonna; A., Cricenti; P., Luches; Valeri, Sergio; F., Boscherini; J., Qi; Y., Xue; N., Tolk. - In: SUPERLATTICES AND MICROSTRUCTURES. - ISSN 0749-6036. - STAMPA. - 46:1-2(2009), pp. 107-113. [10.1016/j.spmi.2009.01.013]
Fe/NiO(100) and Fe/MgO(100) interfaces studied by X-rayabsorption spectroscopy and non-linear Kerr effect
VALERI, Sergio;
2009
Abstract
A structural characterization of the Fe/NiO(100) and Fe/MgO(100)interfaces is reported. Polarization-dependent X-ray absorptionspectroscopy has been employed to explore the local atomicstructure of the interfaces. A strong difference between the twosystems is observed: the Fe/MgO(100) interface does not showa significant Fe oxidation or oxygen diffusion while a buckledFeO like layer is observed at Fe/NiO(001). Moreover, while on theMgO(001) substrate the tetragonal strain is released at 10 ML Fethickness, a residual epitaxial strain can be observed on a film ofthe same thickness on NiO(001). A magnetic characterization of theFe/NiO(001) system by linear and non-linear magneto-optical Kerreffect measurements is also reported and discussed.' 2009 Elsevier Ltd. All rights reserved.
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