铁铂纳米线的磁力显微术研究

大学生园地

铁铂纳米线的磁力显微术研究

展开

刘心萌( 2001—) ，女，北京人，中国人民大学理学院物理系2016 级本科生

收稿日期: 2018-10-07

修回日期: 2018-12-14

网络出版日期: 2019-07-02

基金资助

中国人民大学“厚重人才成长支持计划”; 国家大学生创新性实验计划( 298418404621) 资助.

收起

A magnetic force microscopy study of FePt nanowires

Expand

1. Department of Physics，Renmin University of China，Beijing 100872，China; 2. National Center for Nanoscience and Technology，Beijing 100190，China

Received date: 2018-10-07

Revised date: 2018-12-14

Online published: 2019-07-02

Fold

本研究利用磁力显微术扫描观测了附着在二氧化硅衬底上的铁铂纳米线样品的表面形貌和磁性结构，实现了对铁

铂纳米线磁学信息的成像. 将磁学信息成像中的明暗分布与纳米线的形貌成像相结合，分析了铁铂纳米线的磁极分布. 磁极

方向相反的纳米线聚集在一起的现象表明磁化材料总是趋于能量最低的状态. 通过改变外加磁场的强度和方向控制铁铂纳

米线内部的磁化状态，观测到磁极反转现象.

关键词： 原子力显微术; 磁力显微术; 铁铂纳米线; 磁极反转

刘心萌, 王昊, 王懿, 叶仕丽, 许瑞, 程志海 . 铁铂纳米线的磁力显微术研究[J]. 大学物理, 2019 , 38(6) : 60 . DOI: 10.16854 /j.cnki.1000-0712.180549

In this study，MFM is used to scan and observe the surface and magnetization of FePt nanowires scattered

on a SiO2 substrate and their magnetic images are also obtained. The magnetizaion distribution of FePt nanowires

is analyzed based on bright and dark regions shown on magnetic images. The aggregation of nanowires with opposite

magnetization indicates magnetic materials always tend to be in the lowest energy state. The orientation of magnetization

of FePt nanowires can be controlled and magnetic reversal is observed by applying external magnetic field.

Key words： atomic force microscope; magnetic force microscope; FePt nanowires; magnetic reversal

Options

文章导航