| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
This research was pursued to realize an ultra-high speed servo signal printing method which can be used for energy-assisted magnetic recording and shingled magnetic recording, and the following results were obtained. It was desirable that the printing magnetic field had large in-plane component as much as possible in order to reduce the transition noise of printed signals regardless of structure of recording layer. Demagnetized magnetic domain structure of CoPt thin films with high magnetic anisotropy which was suitable for the magnetic layer of master media depended on the applied magnetic field direction, and perpendicular demagnetized films had larger domain than in-plane ones. Interlayer exchange interaction of recording layers with stacked structure seriously influenced the printing characteristics.
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