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Spectroscopy and Imaging of Edge Modes in Permalloy Nanodisks
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Engineering Material Physics.ORCID iD: 0000-0003-4889-4210
2013 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 110, no 1, 017601- p.Article in journal (Refereed) Published
Abstract [en]

We report ferromagnetic resonance force microscopy of confined spin-wave modes with improved, 100 nm resolution. The ferromagnetic resonance spectra in Permalloy disks (diameters ranging from 100 to 750 nm) distinguish multiple edge modes, and the images reveal distinct precession patterns. The fundamental edge mode also provides a new, localized probe of the magnetic properties of the film edge; rotation of the applied field reveals large edge property variations in nominally circular disks. As a function of disk diameter, the number of observed edge modes agrees with modeling.

Place, publisher, year, edition, pages
2013. Vol. 110, no 1, 017601- p.
Keyword [en]
Applied field, Circular disk, Disk diameters, Edge properties, Ferromagnetic resonance force microscopy, Film edge, Nanodisks, Nm resolution, Spin-wave mode
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-117638DOI: 10.1103/PhysRevLett.110.017601ISI: 000313028500017Scopus ID: 2-s2.0-84872006244OAI: oai:DiVA.org:kth-117638DiVA: diva2:602799
Funder
VinnovaSwedish Research Council
Note

QC 20130204

Available from: 2013-02-04 Created: 2013-02-01 Last updated: 2017-12-06Bibliographically approved

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Belova, Liubov M.

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