Magnetic properties and L1 0 phase formation of FePt films prepared by high current-density ion-beam irradiation and rapid thermal annealing methods

T. Yokota, M. L. Yan, Yingfan Xu, L. Gao, R. Zhang, L. Nicholl, L. Yuan, R. Skomski, D. J. Sellmyer, S. H. Liou, Chih Huang Lai, Cheng Han Yang, Sheng Huang Huang

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Abstract

We investigated magnetic properties and L 10 phase formation of FePt films by rapid thermal annealing (RTA) and high current-density ion-beam irradiation. The sample prepared by RTA at 550°C has (001) texture and strong magnetic perpendicular anisotropy with Hc equal to 6 kOe. The sample irradiated at 5.04 μA cm2 has Hc equal to 10 kOe but has isotropic magnetic properties due to the (111) texture. The magnetic correlation length of the ion-irradiated sample was about twice as large as that of the RTA sample. This may be due to the inhomogeneity of the L 10 phase formation in the ion-irradiated film.

Original languageEnglish (US)
Article number10H306
JournalJournal of Applied Physics
Volume97
Issue number10
DOIs
StatePublished - May 15 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Yokota, T., Yan, M. L., Xu, Y., Gao, L., Zhang, R., Nicholl, L., Yuan, L., Skomski, R., Sellmyer, D. J., Liou, S. H., Lai, C. H., Yang, C. H., & Huang, S. H. (2005). Magnetic properties and L1 0 phase formation of FePt films prepared by high current-density ion-beam irradiation and rapid thermal annealing methods. Journal of Applied Physics, 97(10), [10H306]. https://doi.org/10.1063/1.1853018