Magnetic transmission X-ray microscopy:: imaging magnetic domains via the X-ray magnetic circular dichroism

被引:14
作者
Eimüller, T
Fischer, P
Schütz, G
Guttmann, P
Schmahl, G
Pruegl, K
Bayreuther, G
机构
[1] Univ Wurzburg, D-97074 Wurzburg, Germany
[2] Univ Gottingen, FE Rontgenphys, D-37073 Gottingen, Germany
[3] Univ Regensburg, Inst Expt & Angew Phys, D-93053 Regensburg, Germany
关键词
magnetic transmission X-ray microscopy (M-TXM); magnetic circular dichroism (X-MCD); magnetic domains; magnetization reversal; domain wall pinning;
D O I
10.1016/S0925-8388(98)00974-8
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
X-ray magnetic circular dichroism (X-MCD), i.e. the dependence of the absorption of circularly polarized X-rays on the magnetization of a ferromagnetic sample used as a contrast mechanism in combination with a high resolution transmission X-ray microscope (TXM) enables a quantitative and element-specific imaging of magnetic structures with a lateral resolution down to about 30 nm. Quantitative information on the local magnetization can be obtained, in particular a separation between spin and orbital moments is possible by applying magneto-optical sum-rules. Images in varying external magnetic fields can be recorded and allow to study magnetization reversal processes within a complete magnetization cycle. Multilayered systems of FeGd and PtCo have been studied. Results on the mechanism of pinning of domain walls as, e.g. the density of pinning centers are presented. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:20 / 25
页数:6
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