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By Zhu X., Grütter P.
Magnetic strength microscopy (MFM) is a well-established process for imaging themagnetic buildings of small magnetic debris. In cooperation with exterior magneticfields, MFM can be utilized to check the magnetization switching mechanism ofsubmicrometer-sized magnetic particles.Various MFM options let the measurementof a hysteresis curve of anyone particle, that could then be in comparison toensemble measurements. the benefit of utilizing MFM-constructed hysteresis loops isthat it is easy to in precept comprehend the beginning of dispersion in switching fields. it truly is alsopossible to without delay realize the correlation among magnetic debris via carefulimaging and keep watch over of the exterior magnetic box. In all of those measurements,attention has to be paid to prevent artifacts that outcome from the unavoidable magnetic tipstray box. keep watch over might be completed via optimizing the MFM operation mode in addition asthe tip parameters. it truly is even attainable to exploit the top stray box to in the community and reproduciblymanipulate the magnetic-moment kingdom of small debris. listed here, we illustratethese strategies and concerns by way of learning a variety of lithographically patterned magneticnanoparticles, hence demonstrating the flexibility of MFM for imaging, manipulation, andspectroscopic measurements of small debris.
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