Magneto-optical Kerr effect analysis of magnetic nanostructures

被引：160
|
作者：
Allwood, DA [1 ]
Xiong, G [1 ]
Cooke, MD [1 ]
Cowburn, RP [1 ]
机构：
[1] Univ Durham, Dept Phys, Nanomagnet Grp, Durham DH1 3LE, England
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2003年 / 36卷 / 18期
关键词：
NANOWIRES; DOMAIN; ENHANCEMENT; MULTILAYERS; FILMS;
D O I：
10.1088/0022-3727/36/18/001
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present a treatment of polarized light analysis and noise sources relevant to magneto-optical Kerr effect (MOKE) measurements of magnetic nanostructures and give performance details of our state-of-the-art MOKE magnetometer in these terms. By considering the various signal contributions, we are able to determine experimental conditions for optimal MOKE signal dynamic range and signal-to-noise ratio. A description of our MOKE instrument includes a novel facility to locate magnetic nanostructures by producing a susceptibility map of the sample surface. The performance of the magnetometer is demonstrated by hysteresis loops of single 100-200 nm wide magnetic nanowires, including a loop obtained with no time averaging during a single magnetic field cycle.
引用
收藏
页码：2175 / 2182
页数：8
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