Enhanced soft magnetic properties in N-doped amorphous FeCo thin film

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dc.contributor.authorDas, Rajasreeen
dc.contributor.authorWei, Guan-Nanen
dc.contributor.authorLordan, Danielen
dc.contributor.authorHayes, Mikeen
dc.contributor.authorClarke, Barryen
dc.contributor.authorHurley, Daviden
dc.contributor.authorÓ Mathúna, Cianen
dc.contributor.authorSai, Ranajiten
dc.contributor.authorMcCloskey, Paulen
dc.contributor.funderTEL Magnetic Solutions Ltden
dc.contributor.funderEnterprise Irelanden
dc.date.accessioned2023-09-06T11:37:18Z
dc.date.available2023-09-06T11:37:18Z
dc.date.issued2023-06-26en
dc.description.abstractSputtered FeCoN x thin films with various nitrogen fraction are investigated in the quest of low lossy, soft magnetic thin films (SMFs) for high frequency inductor core. 100-nm thick FeCoN x films were deposited in N 2 +Ar environment (5 mTorr) with increasing N 2 volume percent, x % = N 2 /(Ar + N 2 ), up to 30%. While FeCo thin film is isotropic, incorporation of nitrogen in the film exhibits a well-defined uniaxial magnetic anisotropy (UMA) as a result of reduced stress in the FeCoN x films. FeCoN 17.5 thin film with UMA shows superior all-round soft magnetic properties (saturation flux density ~ 1.7 T, coercivity ~ 7.8 Oe, real permeability ~ 381.7 and resistivity ~ 201 μΩ.cm). Study of the dynamic magnetic properties of FeCoN x ( x = 15, 17.5 and 19%) films reveal two ferromagnetic resonance (FMR) peaks. Double resonance peaks in films with high concentration of nitrogen might be related to FeCo and Fe-N multiphase in the films. Furthermore, evolution of the real (μʹ) and imaginary (μʺ) part of the permeability spectra in the presence of dc magnetic bias field is also examined.en
dc.description.sponsorshipTEL Magnetic Solutions Ltd and Enterprise Ireland (Innovation Partnership Programme Contract No: IP 2020 0912)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid2001305
dc.identifier.citationDas, R., Wei, G.-N., Lordan, D., Hayes, M., Clarke, B., Hurley, D., Ó Mathúna, C., Sai, R. and McCloskey, P. (2023) 'Enhanced soft magnetic properties in N-doped amorphous FeCo thin film', IEEE Transactions on Magnetics, 59(11), 2001305 (5pp). doi: 10.1109/TMAG.2023.3287682en
dc.identifier.doi10.1109/tmag.2023.3287682en
dc.identifier.eissn1941-0069en
dc.identifier.endpage5
dc.identifier.issn0018-9464en
dc.identifier.issued11
dc.identifier.journaltitleIEEE Transactions on Magneticsen
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/14928
dc.identifier.volume59
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.rights© 2023, 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.subjectSoft magnetic thin filmsen
dc.subjectMagnetic anisotropyen
dc.subjectFeCo magnetic materialsen
dc.subjectPermeabilityen
dc.subjectSaturation flux densityen
dc.titleEnhanced soft magnetic properties in N-doped amorphous FeCo thin filmen
dc.typeArticle (peer-reviewed)en
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