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J Synchrotron Radiat. 2018 Mar 1;25(Pt 2):473-483. doi: 10.1107/S1600577517017192. Epub 2018 Feb 15.

Nuclear resonance reflectivity from a [57Fe/Cr]30 multilayer with the Synchrotron Mössbauer Source.

Author information

1
Faculty of Physics, M. V. Lomonosov Moscow State University, Moscow 119991, Russian Federation.
2
ESRF - The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France.
3
National Research Centre `Kurchatov Institute', Pl. Kurchatova 1, Moscow 123182, Russian Federation.
4
M. N. Mikheev Institute of Metal Physics UB RAS, Ekaterinburg 620990, Russian Federation.

Abstract

Mössbauer reflectivity spectra and nuclear resonance reflectivity (NRR) curves have been measured using the Synchrotron Mössbauer Source (SMS) for a [57Fe/Cr]30 periodic multilayer, characterized by the antiferromagnetic interlayer coupling between adjacent 57Fe layers. Specific features of the Mössbauer reflectivity spectra measured with π-polarized radiation of the SMS near the critical angle and at the `magnetic' maximum on the NRR curve are analyzed. The variation of the ratio of lines in the Mössbauer reflectivity spectra and the change of the intensity of the `magnetic' maximum under an applied external field has been used to reveal the transformation of the magnetic alignment in the investigated multilayer.

KEYWORDS:

Mössbauer spectroscopy; Synchrotron Mössbauer Source; antiferromagnetic interlayer coupling; magnetic multilayers; nuclear resonance reflectivity

PMID:
29488927
DOI:
10.1107/S1600577517017192

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