| Presentation | 2019-12-05 Micromagnetic analysis of MAMR recording head Ryo Itagaki, Yasushi Kanai, Simon Greaves, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A micromagnetic model analysis of STOs was carried out to realize stable STO oscillation with small J. Using write heads with a tilted and parallel, 20 nm MP ? TS gap we investigated STO oscillation as a function of 1) STO tilt angle with respect to recording media surface and 2) Gilbert damping factor α of the write head. We found 1) Gilbert damping factor α of the write head, especially in the main pole ? trailing shield (MP ? TS) gap region, greatly affected the STO oscillation. 2) STO oscillated stably in a parallel MP ? TS gap. 3) STO/gap tilt angle of 15° seemed good. 4) Injected current density to STO of J = 3×10^8 A/cm^2 was enough, compared with J = 6×10^8 A/cm^2 in our previous models. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Microwave-Assisted Magnetic Recording (MAMR) / Spin Torque Oscillator (STO) / Write Heads / Micromagnetic Simulation |
| Paper # | MRIS2019-41 |
| Date of Issue | 2019-11-28 (MRIS) |
| Conference Information | |
| Committee | MRIS / ITE-MMS |
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| Conference Date | 2019/12/5(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Ehime University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Signal Processing and Others |
| Chair | Satoshi Matsunuma(Maxell) / Norihiko Ishii(NHK) |
| Vice Chair | |
| Secretary | (Toshiba) / (Kinki Univ.) |
| Assistant | Ikuya Tagawa(Tohoku Inst. of Tech.) / Hiroko Arai(AIST) |
| Paper Information | |
| Registration To | Technical Committee on Magnetic Recording & Information Storage / Technical Group on Multi-media Storage |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Micromagnetic analysis of MAMR recording head |
| Sub Title (in English) | A consideration for stable oscillation of STO at low applied current density |
| Keyword(1) | Microwave-Assisted Magnetic Recording (MAMR) |
| Keyword(2) | Spin Torque Oscillator (STO) |
| Keyword(3) | Write Heads |
| Keyword(4) | Micromagnetic Simulation |
| 1st Author's Name | Ryo Itagaki |
| 1st Author's Affiliation | Niigata Institute of Technology(NIIT) |
| 2nd Author's Name | Yasushi Kanai |
| 2nd Author's Affiliation | Niigata Institute of Technology(NIIT) |
| 3rd Author's Name | Simon Greaves |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2019-12-05 |
| Paper # | MRIS2019-41 |
| Volume (vol) | vol.119 |
| Number (no) | MRIS-326 |
| Page | pp.pp.13-18(MRIS), |
| #Pages | 6 |
| Date of Issue | 2019-11-28 (MRIS) |