Soft X-Ray Phase Nanomicroscopy of Micrometer-Thick Magnets

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dc.creatorNeethirajan, Jeffrey
dc.creatorDaurer, Benedikt J
dc.creatorDi Pietro Martínez, Marisel
dc.creatorHrabec, Aleš
dc.creatorTurnbull, Luke
dc.creatorYamamoto, Rikako
dc.creatorFerreira, Marina Raboni
dc.creatorŠtefančič, Aleš
dc.creatorMayoh, Daniel Alexander
dc.creatorBalakrishnan, Geetha
dc.creatorPei, Zhaowen
dc.creatorXue, Pengfei
dc.creatorChang, Liao
dc.creatorRinge, Emilie
dc.creatorHarrison, Richard
dc.creatorValencia, Sergio
dc.creatorKazemian, Majid
dc.creatorKaulich, Burkhard
dc.creatorDonnelly, Claire
dc.date2024-06-07T23:30:55Z
dc.date2024-07-01
dc.date.accessioned2026-08-03T02:05:56Z
dc.descriptionImaging of nanoscale magnetic textures within extended material systems is of critical importance to both fundamental research and technological applications. While high-resolution magnetic imaging of thin nanoscale samples is well established with electron and soft x-ray microscopy, the extension to micrometer-thick systems currently requires hard x rays, which limits high-resolution imaging to rare-earth magnets. Here, we overcome this limitation by establishing soft x-ray magnetic imaging of micrometer-thick systems using the pre-edge phase x-ray magnetic circular dichroism signal, thus making possible the study of a wide range of magnetic materials. By performing dichroic spectroptychography, we demonstrate high spatial resolution imaging of magnetic samples up to <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"> <mrow> <mn>1.7</mn> <mtext> </mtext> <mtext> </mtext> <mi mathvariant="normal">μ</mi> <mrow> <mi mathvariant="normal">m</mi> </mrow> </mrow> </math> thick, an order of magnitude higher than conventionally possible with soft x-ray absorption-based techniques. We demonstrate the applicability of the technique by harnessing the pre-edge phase to image thick chiral helimagnets, and naturally occurring magnetite particles, gaining insight into their three-dimensional magnetic configuration. This new regime of magnetic imaging makes possible the study of extended non-rare-earth systems that have until now been inaccessible, including magnetic textures for future spintronic applications, non-rare-earth permanent magnets for energy harvesting, and the magnetic configuration of giant magnetofossils. Published by the American Physical Society 2024
dc.descriptionThis project has re- ceived funding from the European Union’s Horizon 2020 research and innovation programme under Grant agree- ment No 101005611. R.J.H. acknowledges funding by the Electron and X-ray microscopy Community for structural and chemical Imaging Techniques for Earth materials (EXCITE) (award number G106564).
dc.formatapplication/pdf
dc.identifier2160-3308
dc.identifierhttps://www.repository.cam.ac.uk/handle/1810/369305
dc.identifierhttps://doi.org/10.17863/CAM.109168
dc.identifier2160-3308
dc.identifier.urihttps://repo.dare.co.zw/handle/123456789/163551
dc.languageeng
dc.publisherAmerican Physical Society (APS)
dc.publisherDepartment of Earth Sciences
dc.publisherhttps://doi.org/10.1103/physrevx.14.031028
dc.rightsAttribution 4.0 International
dc.rightshttps://creativecommons.org/licenses/by/4.0/
dc.subject51 Physical Sciences
dc.subjectBiomedical Imaging
dc.subject7 Affordable and Clean Energy
dc.titleSoft X-Ray Phase Nanomicroscopy of Micrometer-Thick Magnets
dc.typeArticle

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