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, David J Sellmyer, Sy-Hwang 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
Publication statusPublished - May 15 2005

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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