Domain wall structure in magnetic bilayers with perpendicular anisotropy

被引：21
|
作者：
Bellec, A. [1 ]
Rohart, S. [1 ]
Labrune, M. [2 ]
Miltat, J. [1 ]
Thiaville, A. [1 ]
机构：
[1] Univ Paris 11, CNRS, UMR 8502, Phys Solides Lab, F-91405 Orsay, France
[2] Univ Paris 13, CNRS, UPR 9001, Lab PMTM, F-93430 Villetaneuse, France
来源：
EPL | 2010年 / 91卷 / 01期
关键词：
SPIN-VALVE TRANSISTOR; FORCE MICROSCOPY; COBALT FILMS; REVERSAL; SAMPLES; LAYERS; AU;
D O I：
10.1209/0295-5075/91/17009
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the magnetic domain wall structure in magnetic bilayers (two ultrathin ferromagnetic layers separated by a non-magnetic spacer) with perpendicular magnetization. Combining magnetic force and ballistic electron emission microscopies, we are able to reveal the details of the magnetic structure of the wall with a high spatial accuracy. In these layers, we show that the classical Bloch wall observed in single layers transforms into superposed Neel walls due to the magnetic coupling between the ferromagnetic layers. Quantitative agreement with micromagnetic calculations is achieved. Copyright (C) EPLA, 2010
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页数：6
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