| Presentation | 2008/6/5 Effect of Current Confined Path on Spin Torque Noise in CPP-GMR Heads with a Current Screen Layer Masato SHIIMOTO, Hiroyuki KATADA, Kazuhiro NAKAMOTO, Hiroyuki HOSHIYA, Sarbanoo DAS, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We investigated the effect of current-confined-path on spin-torque noise in current-perpendicular-to-the-plane giant-magnetoresistive (CPP-GMR) heads with a current screen layer (a nano oxide layer having current-confined-paths). We found that the current screen structure is effective in suppressing the spin-torque noise. Because, magnetization fluctuation in conductive areas can be reduced by magnetic coupling with magnetization in nonconductive areas. To reduce spin-torque noise , it is effective to reduce the area of each metallic nano-hole while keeping the total conductive area constant, since the magnetic coupling between the magnetization in conductive areas and that in nonconductive areas is enhanced. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | CPP-GMR / confined current path / magnetic read head / magnetic read sensor / spin torque / noise |
| Paper # | MR2008-5 |
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| Conference Information | |
| Committee | MR |
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| Conference Date | 2008/6/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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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) | Effect of Current Confined Path on Spin Torque Noise in CPP-GMR Heads with a Current Screen Layer |
| Sub Title (in English) | |
| Keyword(1) | CPP-GMR |
| Keyword(2) | confined current path |
| Keyword(3) | magnetic read head |
| Keyword(4) | magnetic read sensor |
| Keyword(5) | spin torque |
| Keyword(6) | noise |
| 1st Author's Name | Masato SHIIMOTO |
| 1st Author's Affiliation | Central Research Laboratory, Hitachi, Ltd.() |
| 2nd Author's Name | Hiroyuki KATADA |
| 2nd Author's Affiliation | Central Research Laboratory, Hitachi, Ltd. |
| 3rd Author's Name | Kazuhiro NAKAMOTO |
| 3rd Author's Affiliation | Central Research Laboratory, Hitachi, Ltd. |
| 4th Author's Name | Hiroyuki HOSHIYA |
| 4th Author's Affiliation | Central Research Laboratory, Hitachi, Ltd. |
| 5th Author's Name | Sarbanoo DAS |
| 5th Author's Affiliation | Central Research Laboratory, Hitachi, Ltd. |
| Date | 2008/6/5 |
| Paper # | MR2008-5 |
| Volume (vol) | vol.108 |
| Number (no) | 81 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |