arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.3739cond-mat.mes-hall
收藏

用磁力显微镜定量测量单个磁性纳米颗粒的磁矩

Quantitative measurement of the magnetic moment of an individual magnetic nanoparticle by magnetic force microscopy

Kai-Felix Braun, Sibylle Sievers, Dietmar Eberbeck, Stefan Gustafsson, Eva Olsson, Hans Werner Schumacher, Uwe Siegner

摘要:

我们证明了使用磁力显微镜(MFM)的单个磁性纳米粒子(MNP)的磁化强度的定量测量。通过使用具有示踪确定的磁化的MNP参考样品校准MFM信号来实现定量测量。实验证明,在环境条件下,磁矩的分辨率为10^(-18)Am ^2量级,目前这一分辨率受到针尖的磁矩和仪器噪声水平的限制。该校准方案可以应用于几乎任何MFM和尖端,从而允许广泛的未来应用,例如在纳米磁学和生物技术。

英文摘要:

We demonstrate the quantitative measurement of the magnetization of individual magnetic nanoparticles (MNP) using a magnetic force microscope (MFM). The quantitative measurement is realized by calibration of the MFM signal using an MNP reference sample with traceably determined magnetization. A resolution of the magnetic moment of the order of 10^(-18) Am^2 under ambient conditions is demonstrated which is presently limited by the tip's magnetic moment and the noise level of the instrument. The calibration scheme can be applied to practically any MFM and tip thus allowing a wide range of future applications e.g. in nanomagnetism and biotechnology.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑