Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Perpendicular Magnetization of FePt Alloy Films Epitaxially Grown on Si(100)

  • Published : 2009.12.31
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Abstract

This study examined the structure and perpendicular magnetization of FePt films grown on Pt/Fe/MgO(100) buffered Si(100) substrates by molecular beam epitaxy. The [Fe(0.17nm)/Pt(0.2nm)]$_N$ multilayers were prepared at room temperature to form a $L1_0$-FePt phase after vacuum annealing. Perpendicular magnetic anisotropy (PMA) was observed in the films after at least 15 repetitions (N = 15) of Fe/Pt deposition and annealing at $300{^{\circ}C}$ for 1 hour. Careful structural analysis of the films was carried out by x-ray diffraction and high-resolution transmission electron microscopy. These results will assist in the development of the low temperature $L1_0$- FePt deposition process, which will be essential for future extremely high density magnetic recording media.

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References

  1. S. Sun, C. B. Murray, D. Weller, l. Folks, and A. Moser, Science 287, 1989 (2000) https://doi.org/10.1126/science.287.5460.1989
  2. T. Klemmer et al., Scr. Metall. Mater. 33, 1793 (1995) https://doi.org/10.1016/0956-716X(95)00413-P
  3. Y. K. Takahashi, M. Ohnuma, and K. Hono, Jpn. J. Appl. Phys. 40, L1367 (2001) https://doi.org/10.1143/JJAP.40.1367
  4. Y.-N. Hsu et al., J. Appl. Phys. 89, 7068 (2001) https://doi.org/10.1063/1.1360683
  5. C. P. Luo and D. J. Sellmyer, IEEE Trans. Magn. 31, 2764 (1995) https://doi.org/10.1109/20.490144
  6. T. Maeda, T. Kai, A. Kikisu, T. Nagase, and J. Akiyama, Appl. Phys. Lett. 80, 2147 (2002) https://doi.org/10.1063/1.1463213
  7. T. Shima, T. Moriguchi, S. Mitani, and K. Takanashi, Appl. Phys. Lett. 80, 288 (2002) https://doi.org/10.1063/1.1432446
  8. T. Shima, K. Takanashi, Y. K. Takahashi, and K. Hono, Appl. Phys. Lett. 85, 2571 (2004) https://doi.org/10.1063/1.1794863
  9. M. Weisheit, L. Shultz, and S. Fahler, J. Appl. Phys. 95, 7489 (2004) https://doi.org/10.1063/1.1667456
  10. T. Seki et al., IEEE Trans. Magn. 40, 2522 (2004) https://doi.org/10.1109/TMAG.2004.832108
  11. T. Shima, T. Seki, K. Takanashi, Y. K. Takahashi, and K. Hono, J. Magn. Magn. Mater. 272-276, e557 (2004) https://doi.org/10.1016/j.jmmm.2003.11.203