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テラビット記録用パターンド磁気記録メディアの設計 Design of Patterned Magnetic Recording Media for Tera-Bit Recording 本多, 直樹 大内, 一弘 Honda, Naoki Ouchi, Kazuhiro open access pattemed magnetic recording media tera－bit recording perpendicular magnetic recording thermal stability Specifications of patterned magnetic recording media for tera-bit recording were designed as an extension of perpendicular magnetic recording. Effective thermal stability of the magnetic dots with perpendicular anisotropy was estimated using the magnetic field where magnetization reversal begins in the magnetic dot array by the applied perpendicular field. The estimated magnetic properties of the media with an areal density of 1 Tbit/in2 were expected to be realized with known hard magnetic materials such as Co-Pt and FePt alloys. Effects of the size and shape of dots and the spacing between dots on the magnetic reversal properties were investigated using a micromagnetic simulation. It was found that the spacing between dots would impose strong restriction on the achievable recording density. Recording simulation on a designed patterned medium indicated possibility of realization of 1 Tbit/in2 recording. 日本素材物性学会 2006-11-01 jpn journal article VoR http://hdl.handle.net/10295/617 https://air.repo.nii.ac.jp/records/838 素材物性学雑誌 19 1/2 18 24 https://air.repo.nii.ac.jp/record/838/files/sozai19d.pdf application/pdf 956.8 kB 2017-02-16