The study of magnetic properties and microstructures of nano-size FePt islands on amorphous carbon film |
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| Authors: | C.L. ShenP.C. Kuo G.P. LinK.T. Huang S.C. Chen |
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| Affiliation: | a Institute of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
b Department of Materials Engineering, Ming Chi University of Technology, Taipei 24301, Taiwan |
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| Abstract: | This work focuses on the formation mechanisms of nano-island FePt film on commercial copper grids covered with an amorphous carbon film. FePt films of different thickness (1-7.5 nm) were deposited on amorphous carbon film and then post-annealed at 700 °C for 30 min. The configuration of the film was changed during the annealing process due to the surface energy difference between the amorphous carbon films and FePt alloy. We have prepared nanometer-size island-shaped FePt films on the amorphous carbon films and investigated their magnetic properties and microstructures. A discontinuous nano-size island magnetic film can reduce the exchange coupling of the media and increase the recording density. |
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| Keywords: | FePt Magnetic recording media Nano-island Surface energy Self-assembled |
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