Related Experiment Video
Updated: Aug 15, 2026

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
Published on: July 20, 2022
Cavity-enhanced magnetooptical observation of magnetization reversal in individual single-domain nanomagnets
Naser Qureshi1, Suqin Wang, Mark A Lowther
1School of Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064, USA.
Abstract:
Optical studies of nanoscale magnets promise access to ultrafast magnetization dynamics but are challenging because of limited spatial resolution. We demonstrate that cavity enhancement of the magnetooptical Kerr effect increases the sensitivity in nanomagnetooptics significantly. Magnetization switching in individual single-domain magnets in both far-field and near-field Kerr microscopy is observed, and scaling laws are determined. Near-field signals remain nearly constant with reduced magnet diameter, indicating favorable scaling of near-field magnetooptics into the deep nanometer range.
More Related Videos
Related Concept Videos
Ferromagnetism
Atomic Nuclei: Magnetic Resonance
Atomic Nuclei: Nuclear Relaxation Processes
Diamagnetism
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Paramagnetism
Atomic Nuclei: Nuclear Spin State Overview

