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A setup combining magneto-optical Kerr effect and conversion electron Mössbauer spectrometry for analysis of the near-surface magnetic properties of thin films

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5 Author(s)
Juraszek, J. ; CNRS-UMR 6634, Groupe de Physique des Matériaux, Université de Rouen, BP 12, F-76801 Saint Etienne du Rouvray, France ; Zivotsky, O. ; Chiron, H. ; Vaudolon, C.
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We propose a system allowing the characterization of thin magnetic multilayer structures that combine conversion electron Mössbauer spectrometry (CEMS) under applied magnetic field with the magneto-optical Kerr effect (MOKE) technique. Measured hysteresis loops obtained from the MOKE part are used for investigation of sample surface magnetic properties. The CEMS part of such a system is suitable for studying the spatial spin distribution during magnetization reversal under applied magnetic field, whose values are established from the measured MOKE loop. The combined technique is demonstrated on the results obtained at 300 K on an exchange-coupled ferrimagnetic amorphous GdFe/TbFe bilayer, where the center of the GdFe layer is enriched in 57Fe. Both techniques confirm in-plane uniaxial anisotropy. The spin structure at the position of the probe layer is analyzed for several values of the external magnetic field applied in the hard magnetization axis direction.

Published in:

Review of Scientific Instruments  (Volume:80 ,  Issue: 4 )

Date of Publication:

Apr 2009

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