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Collective magnetization dynamics in nanoarrays of thin FePd disks
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
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2019 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 99, no 18, article id 184415Article in journal (Refereed) Published
Abstract [en]

We report on the magnetization dynamics of a square array of mesoscopic disks, fabricated from an iron palladium alloy film. The dynamics properties were explored using ferromagnetic resonance measurements and micromagnetic simulations. The obtained spectra exhibit features resulting from the interactions between the disks, with a clear dependence on both temperature and the direction of the externally applied field. We demonstrate a qualitative agreement between the measured and calculated spectra. Furthermore, we calculated the mode profiles of the standing spin waves excited during time-dependent magnetic field excitations. The resulting maps confirm that the features appearing in the ferromagnetic resonance absorption spectra originate from the temperature- and directional-dependent interdisk interactions.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2019. Vol. 99, no 18, article id 184415
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-386163DOI: 10.1103/PhysRevB.99.184415ISI: 000468206200003OAI: oai:DiVA.org:uu-386163DiVA, id: diva2:1328102
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation, 2015.0060The Swedish Foundation for International Cooperation in Research and Higher Education (STINT)EU, Horizon 2020, 737093Available from: 2019-06-20 Created: 2019-06-20 Last updated: 2019-06-20Bibliographically approved

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Ciuciulkaite, AgneÖstman, ErikBrucas, RimantasKumar, AnkitSvedlindh, PeterHjörvarsson, BjörgvinKapaklis, Vassilios

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Ciuciulkaite, AgneÖstman, ErikBrucas, RimantasKumar, AnkitSvedlindh, PeterHjörvarsson, BjörgvinKapaklis, Vassilios
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Materials PhysicsSolid State Physics
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Physical Review B
Condensed Matter Physics

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