Pulsed magnetic field magnetic force microscope and evaluation of magnetic properties of soft magnetic tips
Pulsed magnetic field magnetic force microscope and evaluation of magnetic properties of soft magnetic tips
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脉冲磁场磁力显微镜及软磁尖端磁性能评价
DOI：
10.1088/0022-3727/48/33/335006
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Yukinori Kinoshita and Hitoshi Saito
中科院分区：
文献类型：
--
作者：
Yangdong Zheng;Satoru Yoshimura;Genta Egawa;Fu Zheng;Yukinori Kinoshita and Hitoshi Saito
研制了一种脉冲磁场磁力显微镜（PMF-MFM），用于评价纳米材料和器件的磁性能，以及脉冲磁场磁力显微镜针尖的特性。我们介绍了PMF-MFM系统的建立，并重点介绍了PMF-MFM对FeCo软磁尖端的评价。本文提出了一种利用MFM相位信号计算尖端磁化曲线（M-H曲线）的新理论方法。在与初始磁化方向平行和反平行的脉冲磁场存在下，测量了FeCo针尖的MFM相位和幅度信号，得到了针尖矫顽力H c~ 1.1 kOe。利用MFM相位信号数据计算了叶尖的M-H曲线。我们从尖端的M-H曲线得到了尖端磁性能的基本特征。
A pulsed magnetic field magnetic force microscope (PMF-MFM) is developed for evaluation of the magnetic properties of nano-scale materials and devices, as well as the characteristics of MFM tips. We present the setup of the PMF-MFM system, and focus on the evaluation of a FeCo soft magnetic tip by PMF-MFM. We find a new theoretical method to calculate tip magnetization curves (M-H curves) using MFM phase signals. We measure the MFM phase and amplitude signals for the FeCo tip during the presence of the pulsed magnetic fields oriented parallel and antiparallel to the initial tip magnetization direction, and acquire the tip coercivity H c~ 1.1 kOe. The tip M-H curves are also calculated using the MFM phase signals data. We obtain the basic features of the tip magnetic properties from the tip M-H curves.