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Updated: Jul 4, 2026
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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
Published on: July 20, 2022
Local ferromagnetic resonance imaging with magnetic resonance force microscopy
Yu Obukhov1, D V Pelekhov, J Kim
1Department of Physics, The Ohio State University, Columbus, OH 43210, USA.
Physical Review Letters
|June 4, 2008
Summary
Nanoscale scanned probe ferromagnetic resonance force microscopy (FMRFM) achieves high spatial resolution by utilizing the probe magnet
Area of Science:
- Materials Science
- Physics
- Nanotechnology
Background:
- Ferromagnetic resonance force microscopy (FMRFM) is an advanced imaging technique.
- Achieving high spatial resolution is crucial for characterizing magnetic materials at the nanoscale.
Purpose of the Study:
- To investigate the mechanism behind high spatial resolution in FMRFM imaging.
- To demonstrate the application of FMRFM for imaging individual ferromagnetic microstructures and extended films.
Main Methods:
- Utilizing nanoscale scanned probe ferromagnetic resonance force microscopy (FMRFM).
- Employing a cantilever-mounted micromagnetic probe magnet to generate a highly inhomogeneous local magnetic field.
Main Results:
- The inhomogeneous local magnetic field of the probe magnet enables selective, local excitation of ferromagnetic resonance (FMR).
- This mechanism was demonstrated in individual permalloy disks, achieving nanoscale imaging.
- The approach was extended to image localized FMR modes in extended films.
Conclusions:
- The strongly inhomogeneous local magnetic field of the probe is the key to high spatial resolution in FMRFM.
- FMRFM is a versatile technique for nanoscale imaging of ferromagnetic materials, applicable to both discrete microstructures and continuous films.
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