1. Amorphous Ni–Al underlayer-accelerated L10 ordering transition of FePt thin films
- Author
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Li, Xiaohong, Wang, Fengqing, Guo, Zhe, Li, Hang, Guo, Defeng, Liu, Baoting, and Zhang, Xiangyi
- Subjects
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THIN films , *BINARY metallic systems , *THICKNESS measurement , *ANNEALING of crystals , *NICKEL-aluminum alloys - Abstract
Abstract: In the present study, we succeeded in accelerating the L10 ordering transition of FePt thin films by employing amorphous Ni–Al as underlayers. The coercivity H c =5kOe and ordering parameter S =0.67 of FePt thin films deposited on a Ni–Al underlayer with a thickness of ∼5nm after 380°C annealing for 30min are significantly higher than those H c =0.4kOe and S =0.35 of the films without the Ni–Al underlayer. The L10 ordering process of and the coercivity of FePt thin films can be significantly tuned by varying the thickness of the Ni–Al underlayer. [Copyright &y& Elsevier]
- Published
- 2010
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