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Magnetic force microscopy of an operational spin nano-oscillator
KTH, School of Engineering Sciences (SCI), Applied Physics, Materials and Nanophysics. Univ Tehran, Fac New Sci & Technol, Tehran, Iran..ORCID iD: 0000-0003-4253-357X
Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden..
Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden..ORCID iD: 0000-0002-5908-3619
Univ Tehran, Fac New Sci & Technol, Tehran, Iran..
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2022 (English)In: MICROSYSTEMS & NANOENGINEERING, ISSN 2055-7434, Vol. 8, no 1, article id 65Article in journal (Refereed) Published
Abstract [en]

Magnetic force microscopy (MFM) is a powerful technique for studying magnetic microstructures and nanostructures that relies on force detection by a cantilever with a magnetic tip. The detected magnetic tip interactions are used to reconstruct the magnetic structure of the sample surface. Here, we demonstrate a new method using MFM for probing the spatial profile of an operational nanoscale spintronic device, the spin Hall nano-oscillator (SHNO), which generates high-intensity spin wave auto-oscillations enabling novel microwave applications in magnonics and neuromorphic computing. We developed an MFM system by adding a microwave probe station to allow electrical and microwave characterization up to 40 GHz during the MFM process. SHNOs-based on NiFe/Pt bilayers with a specific design compatible with the developed system-were fabricated and scanned using a Co magnetic force microscopy tip with 10 nm spatial MFM resolution, while a DC current sufficient to induce auto-oscillation flowed. Our results show that this developed method provides a promising path for the characterization and nanoscale magnetic field imaging of operational nano-oscillators.

Place, publisher, year, edition, pages
Springer Nature , 2022. Vol. 8, no 1, article id 65
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:kth:diva-315426DOI: 10.1038/s41378-022-00380-4ISI: 000811752000002PubMedID: 35721373Scopus ID: 2-s2.0-85132153767OAI: oai:DiVA.org:kth-315426DiVA, id: diva2:1681637
Note

QC 20220707

Available from: 2022-07-07 Created: 2022-07-07 Last updated: 2023-03-22Bibliographically approved

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Banuazizi, S. Amir HosseinÅkerman, JohanBelova, Lyubov

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