Hard x-ray magnetic circular dichroism study of a surface-driven twisted state in Gd/Fe multilayers

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机构：
[1] Haskel, D.
[2] Choi, Y.
[3] Lee, D.R.
[4] Lang, J.C.
[5] Srajer, G.
[6] Jiang, J.S.
[7] Bader, S.D.
来源：
Haskel, D. (haskel@aps.anl.gov) | 1600年 / American Institute of Physics Inc.卷 / 93期
关键词：
Ferrimagnetic materials - Fluorescence - Interfaces (materials) - Magnetic hysteresis - Magnetometers - Nucleation - Phase diagrams - SQUIDs - Surface phenomena - Tuning - X ray analysis;
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摘要：
Surface-driven twisted state in Gd/Fe multilayers were studied by tuning incidence angle of hard x-ray magnetic circular dichroism (MCD). Experimental evidence revealing the surface nucleation of a twisted magnetization state in a ferrimagnetic multilayer was presented. It was shown that the surface nucleation occurred at T≅0.7 compensation temperature (Tcomp), and the twist propagated throughout the bulk at T∼Tcomp. The results revealed the ability of grazing incidence MCD in fluorescence geometry.
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