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

页码：2175 / 2182

页数：8

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