摘要
本文利用高分辨磁力显微技术对Ni80Fe20薄膜单元进行了直接观察,发现在双圆盘"花生形"单元中存在磁涡旋结构,并能够清晰地看到单元中心附近或亮或暗的涡旋核。实验结果表明,在包括针尖卷积效应的情况下,磁涡旋核中心轮廓线的直接测量宽度约为40 nm,这个分辨率远高于迄今为止报道的关于磁涡旋结构的MFM测量结果。
The high resolution magnetic force microscopy（MFM） was used to directly observe the Ni80Fe20 thin film elements. It is shown that the magnetic vortex structure appears in the remnant states of the two-disk peanut shaped elements. The vortex core with either a bright spotty contrast or a dark spotty contrast can be directly observed near the center of the element. The line profiles though the vortex core center show that the diameter of the vortex core is about 40 nm even with the convolution of the finite size of the tip apex, which is to date the highest resolution achieved in MFM for the magnetic vortex studies.
出处
《电子显微学报》
CAS
CSCD
北大核心
2009年第4期309-312,共4页
Journal of Chinese Electron Microscopy Society
基金
科技部863纳米专项项目支持(No.2002AA302103)
