Limitations
There are some shortcomings or difficulties when working with an MFM, such as:
- The recorded image depends on the type of the tip and magnetic coating, due to tip-sample interactions.
- Magnetic field of the tip and sample can change each other's magnetization, M, which can result in nonlinear interactions. This hinders image interpretation.
- Relatively short lateral scanning range (order of hundreds micrometers).
- Scanning (lift) height affects the image.
- Housing of the MFM system is important to shield electromagnetic noise (Faraday cage), acoustic noise (anti-vibration tables), air flow (air isolation), and static charge on the sample.
Read more about this topic: Magnetic Force Microscope
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