| Presentation | 2008-11-21 Development of SmCo_5 perpendicular magnetic recording media Isao KOIZUMI, Toru ASAHI, Masahiro YOSHINO, Atsushi SUGIYAMA, Jiro HOKKYO, Tetsuya OSAKA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To improve magnetic properties, an magnetic reversal process and read/write (R/W) characteristics on an SmCo_5 perpendicular magnetic thin films, we introduced pinning sites into the SmCo_5 thin film. In this study, we added carbon (C) atoms into a Cu underlayer as pinning sites. C atoms were diffused up to the Sm-Co magnetic layer during Sm-Co deposition. As a result, the magnetic exchange interactions among the Sm-Co grains were decreased. And then the magnetic domain cluster size became small and magnetization reversal process was changed from a wall-motion magnetization reversal mode to a coherent rotation magnetization reversal mode by adding C atoms into Cu underlayer. We also evaluated the R/W characteristics of SmCo_5 perpendicular double-layerd media. The medium noise was decreased and signal-to noise ratio was increased by introducing the C. The addition of C into the Cu underlayer is effective reducing medium noise and increasing SNR. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | SmCo_5 thin film / Carbon addition / Perpendicular magnetic anisotropy / Read/write (R/W) characteristics / High Ku |
| Paper # | MR2008-37 |
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| Conference Information | |
| Committee | MR |
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| Conference Date | 2008/11/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Magnetic Recording (MR) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of SmCo_5 perpendicular magnetic recording media |
| Sub Title (in English) | |
| Keyword(1) | SmCo_5 thin film |
| Keyword(2) | Carbon addition |
| Keyword(3) | Perpendicular magnetic anisotropy |
| Keyword(4) | Read/write (R/W) characteristics |
| Keyword(5) | High Ku |
| 1st Author's Name | Isao KOIZUMI |
| 1st Author's Affiliation | Faculty of Science and Engineering, Waseda University() |
| 2nd Author's Name | Toru ASAHI |
| 2nd Author's Affiliation | Faculty of Science and Engineering, Waseda University:Consolidated Research Institute for Advanced Science and Medical Care, Waseda University |
| 3rd Author's Name | Masahiro YOSHINO |
| 3rd Author's Affiliation | Faculty of Science and Engineering, Waseda University |
| 4th Author's Name | Atsushi SUGIYAMA |
| 4th Author's Affiliation | Waseda Institute for Advanced Study |
| 5th Author's Name | Jiro HOKKYO |
| 5th Author's Affiliation | Faculty of Science and Engineering, Waseda University |
| 6th Author's Name | Tetsuya OSAKA |
| 6th Author's Affiliation | Faculty of Science and Engineering, Waseda University:Consolidated Research Institute for Advanced Science and Medical Care, Waseda University |
| Date | 2008-11-21 |
| Paper # | MR2008-37 |
| Volume (vol) | vol.108 |
| Number (no) | 313 |
| Page | pp.pp.- |
| #Pages | 6 |
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