Magnetic properties and L10 phase formation of FePt films prepared by high current-density ion-beam irradiation and rapid thermal annealing methods
- Yokota, Takeshi
- Yan, M. L.
- Xu, Ying F.
- Gao, L.
- Zhang, R.
- Nicholl, L.
- Yuan, L.
- Skomski, R.
- Sellmyer, D. J.
- Liou, S. H.
- Lai, Chih Huang
- Yang, Cheng Han
- Huang, Sheng Huang
- ヨコタ, タケシ
- 横田, 壮司
- Yokota, T.
Publication date
May 2005
DOI Publisher
American Institute of Physics ISSN
0021-8979 Citation count (estimate)
9Abstract
We investigated magnetic properties and L10 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 L10 phase formation in the ion-irradiated film
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