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Microstructure and magnetic properties of FePt:Ag nanocomposite films on SiO2/Si(1 0 0) |
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| Authors: | Hao Wang F.J. Yang H.B. Wang X. Cao S.X. Xue J.A. Wang Y. Gao Z.B. Huang C.P. Yang M.F. Chiah W.Y. Cheung S.P. Wong Q. Li Z.Y. Li |
| Affiliation: | 1. Faculty of Physics and Electronic Technology and Nanotechnology Research Centre, Hubei University, Wuhan 430062, PR China;2. Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong;3. Department of Physics, The Chinese University of Hong Kong, Hong Kong;4. Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China |
| Abstract: | FePt:Ag nanocomposite films were prepared by pulsed filtered vacuum arc deposition system and subsequent rapid thermal annealing on SiO2/Si(1 0 0) substrates. The microstructure and magnetic properties were investigated. A strong dependence of coercivity and ordering of the face-central tetragonal structure on both Ag concentration and annealing temperature was observed. With Ag concentration of 22% in atomic ratio, the coercivity got to 6.0 kOe with a grain size of 6.7 nm when annealing temperature was 400 °C. |
| Keywords: | 75.50.Ss 75.70.Ak 75.70.Kw |
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