Ultrafast demagnetization and Gilbert damping in electrodeposited CoP film

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dc.check.date2024-09-30en
dc.check.infoAccess to this article is restricted until 12 months after publication by request of the publisheren
dc.contributor.authorDutta, Somaen
dc.contributor.authorSamanta, Arindamen
dc.contributor.authorPanda, Surya Narayanen
dc.contributor.authorRoy, Saibalen
dc.contributor.authorBarman, Anjanen
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderS. N. Bose National Centre for Basic Sciencesen
dc.contributor.funderDepartment of Science and Technology, Ministry of Science and Technology, Indiaen
dc.contributor.funderUniversity Grants Commissionen
dc.date.accessioned2023-12-01T16:17:30Z
dc.date.available2023-12-01T16:17:30Z
dc.date.issued2023-09-30en
dc.description.abstractFrom portable electronics to high-performance computing, the requirement for miniaturized and high-efficiency power supply is ever-increasing. Soft magnetic material with higher resistivity and moderate anisotropy field can be considered as a promising candidate as core materials for high-frequency integrated magnetic passives leading to such on-chip power supply devices. Here, in-plane magnetic orientation (φ)dependent ultrafast magnetization dynamics of electrodeposited cobalt phosphorus (CoP) alloy are investigated with partial demagnetization within few hundreds of femtoseconds (fs) followed by fast and slow relaxation in relatively longer timescale. The precession frequency extracted from the magnetization precession shows dominant two-fold anisotropy superposed with a moderate four-fold anisotropy, whereas the Gilbert damping coefficient reveals a four-fold anisotropy as a function of φ. On the contrary, the ultrafast demagnetization is found to be nearly isotropic with φ. We can speculate that spin–orbit coupling (SOC) plays a major role in these anisotropic precessional dynamics but for highly non-equilibrium dynamics, the role of anisotropic SOC is negligible for ultrafast spin-flip scattering process. Such detailed studies of ultrafast spin dynamics revealing important dynamical properties will underpin potential applications in high-frequency integrated magnetic passives for future monolithic power supply on-chip.en
dc.description.sponsorshipS. N. Bose National Centre for Basic Sciences (grant nos. SNB/AB/11-12/96 and SNB/ AB/18-19/211; Senior Research Fellowship); Department of Science and Technology, Ministry of Science and Technology, India (grant no. DST/NM/TUEQM-3/2019-1C-SNB) University Grants Commission, Government of India, (UGC Ref. No.: 1545/ (CSIR-UGC NET JUNE 2019)); Science Foundation Ireland (Grant ID: 21/FFP-A/10003-MERIT)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationDutta, S., Samanta, A., Panda, S.N., Roy, S. and Barman, A. (2023) 'Ultrafast demagnetization and Gilbert damping in electrodeposited CoP film', Journal of Materials Science, 58, pp.14817-14830. doi: 10.1007/s10853-023-08956-9en
dc.identifier.doi10.1007/s10853-023-08956-9en
dc.identifier.eissn1573-4803en
dc.identifier.endpage14830en
dc.identifier.issn0022-2461en
dc.identifier.journaltitleJournal of Materials Scienceen
dc.identifier.startpage14817en
dc.identifier.urihttps://hdl.handle.net/10468/15290
dc.identifier.volume58en
dc.language.isoenen
dc.publisherSpringer Nature Ltd.en
dc.rights© 2023, The Authors, under exclusive licence to Springer Nature Limited. This is a post-peer-review, pre-copyedit version of an article published as: Dutta, S., Samanta, A., Panda, S.N., Roy, S. and Barman, A. (2023) 'Ultrafast demagnetization and Gilbert damping in electrodeposited CoP film', Journal of Materials Science, 58, pp.14817-14830. doi: 10.1007/s10853-023-08956-9. The final authenticated version is available online at: https://doi.org/10.1007/s10853-023-08956-9en
dc.subjectIn-plane magnetic orientation dependent ultrafast magnetization dynamics of electrodeposited cobalt phosphorus (CoP) alloyen
dc.subjectGilbert damping coefficienten
dc.subjectUltrafast spin dynamicsen
dc.titleUltrafast demagnetization and Gilbert damping in electrodeposited CoP filmen
dc.typeArticle (peer-reviewed)en
oaire.citation.issue37en
oaire.citation.volume58en
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