Monopolelike probes for quantitative magnetic force microscopy: calibration and application

TL;DR

This paper introduces monopolelike probes for quantitative magnetic force microscopy, demonstrating their calibration and application to measure magnetization in multilayer samples with perpendicular anisotropy.

Contribution

It presents a novel monopolelike probe based on an iron filled carbon nanotube tip for quantitative MFM measurements, enabling accurate magnetization analysis.

Findings

Determined in-plane magnetization component of multilayer sample.

Validated monopolelike behavior of the nanotube tip for quantitative measurements.

Estimated effective permeability of the sample using the *-method.

Abstract

A local magnetization measurement was performed with a Magnetic Force Microscope (MFM) to determine magnetization in domains of an exchange coupled [Co/Pt]/Co/Ru multilayer with predominant perpendicular anisotropy. The quantitative MFM measurements were conducted with an iron filled carbon nanotube tip, which is shown to behave like a monopole. As a result we determined an additional in-plane magnetization component of the multilayer, which is explained by estimating the effective permeability of the sample within the \mu*-method.