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Determination of the magnetization profile of Co/Mg periodic multilayers by magneto-optic Kerr effect and X-ray magnetic resonant reflectivity (Articolo in rivista)

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Determination of the magnetization profile of Co/Mg periodic multilayers by magneto-optic Kerr effect and X-ray magnetic resonant reflectivity (Articolo in rivista) (literal)

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P Jonnard1, K Le Guen1, J-M André1, R Delaunay1, N Mahne2, A Giglia2, S Nannarone2,3, A Verna2, Z-S Wang4, J-T Zhu4 and S-K Zhou4 (2013)
Determination of the magnetization profile of Co/Mg periodic multilayers by magneto-optic Kerr effect and X-ray magnetic resonant reflectivity
in Journal of physics. Conference series (Online); IOP Publishing Ltd., Bristol BS1 6BE (Regno Unito)
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P Jonnard1, K Le Guen1, J-M André1, R Delaunay1, N Mahne2, A Giglia2, S Nannarone2,3, A Verna2, Z-S Wang4, J-T Zhu4 and S-K Zhou4 (literal)

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1 Laboratoire de Chimie Physique-Matière et Rayonnement,Université Pierre et Marie Curie, CNRS UMR 7614, 11 rue Pierre et Marie Curie, F-75231 Paris Cedex 05, France 2 Istituto Officina dei Materiali IOM-CNR Laboratorio TASC, SS 14 km 163,5, I -34149 Basovizza, Trieste, Italy 3 Dipartimento di Ingegneria dei Materiali e dell Ambiente, Universita di Modena e Reggio Emilia, Via Vignolese 905, I-41100 Modena, Italy 4Institute of Precision OpticalEngineering, Department of Physics, Tongji University,Shanghai200092,P. R. China (literal)

Titolo

Determination of the magnetization profile of Co/Mg periodic multilayers by magneto-optic Kerr effect and X-ray magnetic resonant reflectivity (literal)

Abstract

The resonant magnetic reflectivity of Co/Mg multilayers around the Co L 2,3 absorption edge is simulated then measured on a specifically designed sample. The dichroic signal is obtained when making the difference between the two reflectivities measured with the magnetic field applied in two opposite directions parallel to the sample surface. The simulations show that the existence of magnetic dead layers at the interfaces between the Co and Mg layers leads to an important increase of the dichroic signal measured in the vicinity of the third Bragg peak that otherwise should be negligible. The measurements are in agreement with the model introducing 0.25 nm thick dead layers. This is attributed to the Co atoms in contact with the Mg layers and thus we conclude that the Co-Mg interfaces are abrupt from the magnetic point of view. (literal)

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