| Presentation | 2019-06-13 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 was carried out for a spin-torque oscillator (STO) inserted into the write head gap for microwave-assisted magnetic recording. We derived the conditions for stable STO oscillation assuming the write head main pole (MP) and trailing shield (TS) gap to be parallel, as a parallel MP ? TS gap is preferable from the viewpoint of the manufacturing process. First, it was shown that the STO oscillated stably when the parallel head gap was tilted (i.e. was not perpendicular) to the medium surface. Next, we showed that the STO oscillated stably for relatively high Gilbert damping constants, α, of the spin injection layer (α = 0.05) and FGL exchange (A = 4.0 × 10-6 erg/cm). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Microwave-Assisted Magnetic Recording (MAMR) / Spin Torque Oscillator (STO) / Write Heads / Micromagnetic Simulation |
| Paper # | MRIS2019-4 |
| Date of Issue | 2019-06-06 (MRIS) |
| Conference Information | |
| Committee | MRIS / ITE-MMS |
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| Conference Date | 2019/6/13(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Recording Systems, etc. |
| Chair | Satoshi Matsunuma(Maxell) / Akihiko 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) | Oscillation of STO with parallel head gap |
| 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 | 2019-06-13 |
| Paper # | MRIS2019-4 |
| Volume (vol) | vol.119 |
| Number (no) | MRIS-79 |
| Page | pp.pp.15-20(MRIS), |
| #Pages | 6 |
| Date of Issue | 2019-06-06 (MRIS) |