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Proceedings Paper

FePt nanocomposite films for optical-magnetic hybrid recording media
Author(s): F. J. Yang; Hao Wang; H. B. Wang; X. Cao; J. A. Wang; S. X. Xue; Y. Gao; Z. B. Huang; J. Feng; Z. Y. Li
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Paper Abstract

FePt/C and FePt/Ag multilayer films have been prepared by pulsed filtered vacuum arc deposition system and subsequent rapid thermal annealing were performed on SiO2/Si (001) substrates. A strong dependence of coercivity and ordering on C concentration was found in FePt/C films. FePt/C nanoparticles started ordering at 350°C, the longitudinal coercivity got to 8.1 kOe and the saturation magnetization got to 802 emu/cm3 by decreasing C concentration to 21% at 450°. But the coercitity didn't have the same tendency with Ag-doped FePt films. The films with Ag concentration of 22% started ordering at 400°C and the longitudinal coercivity got to 10.6 kOe and the saturation magnetization was 624 emu/cm3 at 500°C. The obtained results suggest that the films might be applicable to optical-magnetic hybrid recording media.

Paper Details

Date Published: 15 September 2005
PDF: 5 pages
Proc. SPIE 5966, Seventh International Symposium on Optical Storage (ISOS 2005), 59660I (15 September 2005); doi: 10.1117/12.649614
Show Author Affiliations
F. J. Yang, Hubei Univ. (China)
Hao Wang, Hubei Univ. (China)
H. B. Wang, Hubei Univ. (China)
X. Cao, Hubei Univ. (China)
J. A. Wang, Hubei Univ. (China)
S. X. Xue, Hubei Univ. (China)
Y. Gao, Hubei Univ. (China)
Z. B. Huang, Hubei Univ. (China)
J. Feng, Hubei Univ. (China)
Z. Y. Li, Huazhong Univ. of Science & Technology (China)


Published in SPIE Proceedings Vol. 5966:
Seventh International Symposium on Optical Storage (ISOS 2005)
Fuxi Gan; Lisong Hou, Editor(s)

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