dorsal/arxiv
View SchemaExtended Depth of Field Magneto-Optical Kerr Microscopy for Applications in 3D Nanomagnetism
| Authors | Le Zhao, Alexander Rabensteiner, Miguel Ángel Cascales-Sandoval, Naëmi Leo, Sabri Koraltan, Amalio Fernández-Pacheco |
|---|---|
| Categories | |
| ArXiv ID | 2601.08059vv1 |
| URL | https://arxiv.org/abs/2601.08059 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
High-resolution imaging of magnetic nanostructures is essential for understanding fundamental spin phenomena and designing advanced devices. Recent developments in three-dimensional (3D) nanomagnetism have highlighted the growing need for imaging techniques that can capture magnetic structures across curved or tilted surfaces with high sensitivity. Though widely used as a powerful technique for imaging magnetization states, conventional magneto-optical Kerr effect (MOKE) microscopy faces inherent limitations in measuring non-planar systems due to its shallow depth of field (DOF). Here, we present an extended depth of field MOKE imaging approach, combining through-focus scanning with image-stitching-based reconstruction, to obtain sharp and well-resolved magnetic domain images across non-planar sample geometries. The method is validated on both perpendicularly and in-plane magnetized films tilted on purpose for this study, enabling quantitative analysis of domain morphology and detection sensitivity. This laboratory-accessible technique provides a fast and versatile route for 3D magnetic imaging, complementing large-scale X-ray-based methods and offering a practical tool for investigating non-planar magnetic samples with tilted or curved 3D geometries.
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"abstract": "High-resolution imaging of magnetic nanostructures is essential for understanding fundamental spin phenomena and designing advanced devices. Recent developments in three-dimensional (3D) nanomagnetism have highlighted the growing need for imaging techniques that can capture magnetic structures across curved or tilted surfaces with high sensitivity. Though widely used as a powerful technique for imaging magnetization states, conventional magneto-optical Kerr effect (MOKE) microscopy faces inherent limitations in measuring non-planar systems due to its shallow depth of field (DOF). Here, we present an extended depth of field MOKE imaging approach, combining through-focus scanning with image-stitching-based reconstruction, to obtain sharp and well-resolved magnetic domain images across non-planar sample geometries. The method is validated on both perpendicularly and in-plane magnetized films tilted on purpose for this study, enabling quantitative analysis of domain morphology and detection sensitivity. This laboratory-accessible technique provides a fast and versatile route for 3D magnetic imaging, complementing large-scale X-ray-based methods and offering a practical tool for investigating non-planar magnetic samples with tilted or curved 3D geometries.",
"arxiv_id": "2601.08059",
"authors": [
"Le Zhao",
"Alexander Rabensteiner",
"Miguel \u00c1ngel Cascales-Sandoval",
"Na\u00ebmi Leo",
"Sabri Koraltan",
"Amalio Fern\u00e1ndez-Pacheco"
],
"categories": [
"physics.app-ph"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "Extended Depth of Field Magneto-Optical Kerr Microscopy for Applications in 3D Nanomagnetism",
"url": "https://arxiv.org/abs/2601.08059",
"version": "v1"
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