Ferromagnetic resonance characterization of nano-FePt by electron spin resonance

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dc.contributor.author Nkosi, S.S.
dc.contributor.author Gavi, H.M. (Happyson Michael)
dc.contributor.author Motaung, D.E.
dc.contributor.author Keartland, J.
dc.contributor.author Sideras-Haddad, E.
dc.contributor.author Forbes, Andrew
dc.contributor.author Mwakikunga, B.W.
dc.date.accessioned 2013-02-06T06:43:04Z
dc.date.available 2013-02-06T06:43:04Z
dc.date.issued 2013
dc.description.abstract Electron spin resonance (ESR) measurements at room temperature and X-band microwave frequency were performed on highly crystalline FePt system thin films. Fairly high DC static magnetic field absorption of about 300 mT was observed in these films. We attribute the high field absorption to ferromagnetic resonance (FMR). Upon increasing iron content in FePt system, no detectable spin waves modes were identified already at room temperature. This signifies a homogeneous distribution of the magnetization across the films. We qualitatively attributed such homogeneity distribution in the films to self-assembly of these Fe–Pt system nanoparticles. The results revealed that the FePt system contains hyperfine coupling with sextet exhibiting a phase reversal behaviour compared to FMR line. Both iron content and crystallite size increased the FMR intensity making the films good candidates for large data storage mediums and spintronics. en_US
dc.description.librarian am2013 en_US
dc.description.sponsorship CSIR National Laser Centre (NLC) (Project no. LHIE100) en_US
dc.description.uri http://www.hindawi.com/journals/spectroscopy/ en_US
dc.identifier.citation Nkosi, SS, Gavi, HM, Motaung, DE, Keartland, J, Sideras-Haddad, E, Forbes, A & Mwakikunga, BW 2013, 'Ferromagnetic resonance characterization of nano-FePt by electron spin resonance', Journal of Spectroscopy, vol. 2013, no. ID 272704, pp. 1-6. en_US
dc.identifier.issn 2314-4920 (print)
dc.identifier.issn 2314-4939 (online)
dc.identifier.other 10.1155/2013/272704
dc.identifier.uri http://hdl.handle.net/2263/20949
dc.language.iso en en_US
dc.publisher Hindawi Publishing Corporation en_US
dc.rights © 2013 S. S. Nkosi et al. This is an open access article distributed under the Creative Commons Attribution License en_US
dc.subject Electron spin resonance (ESR) en_US
dc.subject Ferromagnetic resonance (FMR) en_US
dc.subject FePt system en_US
dc.title Ferromagnetic resonance characterization of nano-FePt by electron spin resonance en_US
dc.type Article en_US


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