Quantitative mapping of magnetic properties at the nanoscale with bimodal AFM,Nanoscale

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Quantitative mapping of magnetic properties at the nanoscale with bimodal AFM
Nanoscale ( IF 5.8 ) Pub Date : 2021-1-15 , DOI: 10.1039/d0nr08662b
Victor G. Gisbert _{1,

2,

3,

4} , Carlos A. Amo _{1,

2,

3,

4} , Miriam Jaafar _{3,

4,

5,

6} , Agustina Asenjo _{1,

2,

3,

4} , Ricardo Garcia _{1,

2,

3,

4}

Affiliation

We demonstrate that a force microscope operated in a bimodal configuration enables the mapping of magnetic interactions with high quantitative accuracy and high-spatial resolution (∼30 nm). Bimodal AFM operation doubles the number of observables with respect to conventional magnetic force microscopy methods which enables to determine quantitatively in a single processing step several magnetic properties. The theory of bimodal AFM provides analytical expressions for different magnetic force models, in particular those characterized by power-law and exponential distance dependences. Bimodal AFM provides a self-evaluation protocol to test the accuracy of the measurements. The agreement obtained between the experiments and theory for two different magnetic samples support the application of bimodal AFM to map quantitatively long-range magnetic interactions.

中文翻译：

双峰原子力显微镜在纳米尺度上磁性的定量映射

我们证明了以双峰模式操作的力显微镜能够以高定量精度和高空间分辨率（〜30 nm）绘制磁性相互作用的图谱。与传统的磁力显微镜方法相比，双峰AFM操作使可观察物的数量增加了一倍，这使得能够在单个处理步骤中定量确定几种磁性。双峰原子力显微镜的理论为不同的磁力模型提供了解析表达式，尤其是那些以幂律和指数距离为特征的模型。双峰AFM提供了一种自我评估协议来测试测量的准确性。

更新日期：2021-01-15

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