Manipulation of magnetic properties by tunable magnetic dipoles in a ferromagnetic thin film

dc.contributor.authorMaity, Tuhin
dc.contributor.authorRoy, Saibal
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderIrish Research Councilen
dc.date.accessioned2018-02-27T11:57:49Z
dc.date.available2018-02-27T11:57:49Z
dc.date.issued2017-03-21
dc.date.updated2018-02-20T09:30:45Z
dc.description.abstractWe demonstrate how a unique nanomodulation within a continuous ferromagnetic film can induce magnetic dipoles at predefined, submicrometer scale locations, which can tune the global magnetic properties of the film due to dipole-dipole interactions. Arrays of tunable magnetic dipoles are generated with in-plane and out-of-plane directions, which can be rotated in-plane within the three-dimensional (3-D) modulated structure of a continuous film. In-plane magnetic dipole rotation enables a methodology to control overall magnetic properties of a ferromagnetic thin film. Formation of magnetic dipoles and their tunability were studied in detail by magnetic force microscopy, high-resolution magnetic measurements, and micromagnetic simulation of a nanomodulated Ni45Fe55 alloy film. A pattern larger than a single magnetic domain would normally form a vortex in the remanent state. However, here the unique 3-D nanostructure prevents vortex formation due to the competition between in-plane and out-of-plane dipole-dipole interaction giving rise to a metastable state. Experimentally, at zero remanence, the magnetization goes through a transformation from a metastable to a stable state, where the dipole-dipole interaction depends on their geometrical arrangement. Thus, the magnetic properties of the continuous film can be varied by the proposed pattern geometry. A detail analytical study of the dipolar energy for the system agrees well with the experimental and simulated results.en
dc.description.sponsorshipIrish Research Council (Project No. GOIPD/2016/474)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMaity, T. and Roy, S. (2017) 'Manipulation of magnetic properties by tunable magnetic dipoles in a ferromagnetic thin film', IEEE Magnetics Letters, 8, 4105404 (4pp). doi:10.1109/LMAG.2017.2685585en
dc.identifier.doi10.1109/LMAG.2017.2685585
dc.identifier.issn1949-307X
dc.identifier.journaltitleIEEE Magnetics Lettersen
dc.identifier.urihttps://hdl.handle.net/10468/5550
dc.identifier.volume8en
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Principal Investigator Programme (PI)/11/PI/1201/IE/Vibration based wideband electromagnetic micropower generators on silicon: MEMS to NEMS/en
dc.rights© 2017, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.en
dc.subjectNanomagneticsen
dc.subjectMagnetic anisotropyen
dc.subjectMagnetic filmen
dc.subjectNanoimprint lithographyen
dc.subjectSoft magnetic materialsen
dc.subjectMagnetostaticsen
dc.subjectPerpendicular magnetic anisotropyen
dc.subjectMagnetic domainsen
dc.subjectMagnetic resonance imagingen
dc.subjectMagnetostatic wavesen
dc.titleManipulation of magnetic properties by tunable magnetic dipoles in a ferromagnetic thin filmen
dc.typeArticle (peer-reviewed)en
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
manuscript.pdf
Size:
633.88 KB
Format:
Adobe Portable Document Format
Description:
Accepted Version
License bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
2.71 KB
Format:
Item-specific license agreed upon to submission
Description: