期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 80, 期 4, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3121215
关键词
amorphous magnetic materials; ferrimagnetic materials; gadolinium alloys; iron alloys; Kerr magneto-optical effect; magnetic anisotropy; magnetic hysteresis; magnetic multilayers; magnetisation reversal; Mossbauer spectroscopy; surface magnetism; terbium alloys
资金
- INTEREG IIIA [198]
- Czech project [KAN400100653]
- Region de Haute-Normandie
We propose a system allowing the characterization of thin magnetic multilayer structures that combine conversion electron Mossbauer 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 Fe-57. 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.
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